List of animals by number of legs

The following is a list of selected animals in order of increasing number of legs, from 0 legs to 653 pairs of legs, the maximum recorded in the animal kingdom.[1] Each entry provides the relevant taxa up to the rank of phylum. Each entry also provides the common name of the animal. If the relevant taxon includes different animals with different common names, then the entry provides the common name of a familiar example.

If juveniles have fewer legs than adults, then the animal is listed by the number of legs recorded in mature adults. If this number varies among adults within the taxon, then this variation is noted in a comment. In counting legs, this list follows conventions adopted in the relevant literature. For example, millipedes with gonopods are listed by numbers that exclude leg pairs that become gonopods, but numbers for millipedes with telopods include leg pairs that become telopods.[2][3][4]

Animals have been selected so that each number from 0 to 55 leg pairs has one example listed. Each of these examples is listed by a number closely associated with the relevant taxon, either because that number is the one most commonly observed in that taxon or because that number is one of only a few recorded for the taxon. Beyond 55 leg pairs, intraspecific variation in leg number increases, and the association between species and any particular number breaks down.[5][6] Beyond 55 leg pairs, examples are listed only if they represent especially significant maximum numbers (e.g., most legs in the animal kingdom) or exhibit relatively little intraspecific variation in leg number.

This list draws examples from three broad groups of animals: tetrapods (with 0 to 2 leg pairs,[7][8] providing three examples), velvet worms (with 13 to 43 leg pairs,[9] providing ten examples), and arthropods (adults with 3 to 653 leg pairs,[10][1] providing all the other examples). Four classes of arthropods each provide multiple examples, including sea spiders (adults with 4 to 6 leg pairs,[11] providing two examples) and pauropods (adults with 8 to 11 leg pairs,[12] providing four examples), but most of the examples listed are either millipedes (adults with 11 to 653 leg pairs)[5][1] or centipedes (adults with 15 to 191 leg pairs).[5] Most of the millipede examples come from two orders, Polydesmida (flat-backed millipedes, providing four examples) and Chordeumatida (sausage millipedes, providing eight examples), each with some variation in leg number among species but little variation within species.[3] Nearly all of the centipede examples come from only one order, Geophilomorpha (soil centipedes), which exhibits wide variation in leg number among species (from 27 to 191 leg pairs).[13] Nearly all of the examples from the order Geophilomorpha come from three families of soil centipedes (Mecistocephalidae, Schendylidae, and Geophilidae) that exhibit relatively little intraspecific variation in leg number.[14][6]

List of animals by number of legs

Number of legs Taxa Common name Comments Image
0 Serpentes (suborder), Squamata (order), Reptilia (class), Tetrapoda (superclass), Vertebrata (subphylum), Chordata (phylum)[7] snake
1 pair Aves (class), Tetrapoda (superclass), Vertebrata (subphylum), Chordata (phylum)[15] bird
2 pairs Tetrapoda (superclass), Vertebrata (subpylum), Chordata (phylum)[8] mammal, for example 2 pairs in most species; some taxa have fewer
3 pairs Hexapoda (subphylum), Arthropoda (phylum)[10] insect, for example
4 pairs Arachnida (class), Chelicerata (subphylum), Arthropoda (phylum)[10] spider, for example
5 pairs Pentapycnon (genus), Pycnogonidae (family), Pantopoda (order), Pycnogonida (class), Chelicerata (subphylum), Arthropoda (phylum)[16] sea spider
6 pairs Sexanymphon mirabilis (monotypic genus & species), Nymphonidae (family), Pantopoda (order), Pycnogonida (class), Chelicerata (subphylum), Arthropoda (phylum)[17] sea spider
7 pairs Isopoda (order), Malacostraca (class), Crustacea (subphylum), Arthropoda (phylum)[10] woodlouse, for example 7 pairs in most species; some taxa have fewer[18]
8 pairs Aletopauropus (genus), Brachypauropodidae (family), Tetramerocerata (order), Pauropoda (class), Myriapoda (subphylum), Arthropoda (phylum)[12] pauropod
9 pairs Tetramerocerata (order), Pauropoda (class), Myriapoda (subphylum), Arthropoda (phylum) pauropod 9 pairs in most species; some taxa deviate from this number[3][12]
10 pairs Decapauropus cuenoti (genus & type species), Pauropodidae (family), Tetramerocerata (order), Pauropoda (class), Myriapoda (subphylum), Arthropoda (phylum) pauropod 9 or 10 pairs in females (usually 9); 9 pairs in males[19]
11 pairs Millotauropus (genus), Millotauropodidae (monotypic family), Hexamerocerata (monotypic order), Pauropoda (class), Myriapoda (subphylum), Arthropoda (phylum)[3][12] pauropod
12 pairs Symphyla (class), Myriapoda (subphylum), Arthropoda (phylum) symphylan 12 pairs in most species; some taxa have fewer[20]
13 pairs Polyxenida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) bristly millipede 13 pairs in most species; some taxa deviate from this number[21]
14 pairs Ooperipatellus viridimaculatus (genus & species), Peripatopsidae (family), Onychophora (phylum)[22] velvet worm
15 pairs Scutigeromorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[23] house centipede
16 pairs Peripatoides suteri (genus & species), Peripatopsidae (family), Onychophora (phylum)[24] velvet worm
17 pairs Glomerida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) northern pill millipede 17 pairs in females; 19 pairs in males (including 1 pair or 2 pairs of telopods)[25]
18 pairs Peripatopsis alba (genus & species), Peripatopsidae (family), Onychophora (phylum)[26] velvet worm
19 pairs Typhloperipatus williamsoni (monotypic genus & species), Peripatidae (family), Onychophora (phylum) velvet worm minimum in family;[9] 19 or 20 pairs in males (usually 19); 20 pairs in females[27]
20 pairs Peripatopsis collarium (genus & species), Peripatopsidae (family), Onychophora (phylum)[28] velvet worm
21 pairs Sphaerotheriida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) giant pill millipede 21 pairs in females; 23 pairs in males (including 2 pairs of telopods)[25]
22 pairs Metaperipatus inae (genus & species), Peripatopsidae (family), Onychophora (phylum) velvet worm 22 pairs in females; 20 pairs in males[9]
23 pairs Scolopocryptopidae (family), Scolopendromorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[23] bark centipede
24 pairs Eoperipatus totoro (genus & species), Peripatidae (family), Onychophora (phylum) velvet worm 24 pairs in females; 23 pairs in males[29]
25 pairs Eoperipatus horsti (genus & species), Peripatidae (family), Onychophora (phylum) velvet worm 24 or 25 pairs in females; 23 or 24 pairs in males (usually 23)[30][31]
26 pairs Agenodesmus reticulatus (genus & type species), Fuhrmannodesmidae (family), Polydesmida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) flat-backed millipede 26 pairs in males (excluding 1 pair of gonopods); 27 pairs in females[3]
27 pairs Schendylops ramirezi (genus & species), Schendylidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede minimum in order; 27 pairs in males; 29 pairs in females[13]
28 pairs Brachydesmus superus (genus & species), Polydesmidae (family), Polydesmida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) flat-backed millipede 28 pairs in males (excluding 1 pair of gonopods); 29 pairs in females[2][3][4]
29 pairs Dinogeophilus oligopodus (genus & species), Schendylidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[13] soil centipede
30 pairs Polydesmida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) flat-backed millipede usually 30 pairs in males (excluding 1 pair of gonopods); usually 31 pairs in females; some taxa deviate from these numbers[2][3][4]
31 pairs Mesochendyla javanica (genus & species), Schendylidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 31 pairs in males; 31 or 33 pairs in females (usually 31)[32]
32 pairs Devillea tuberculata (genus & type species), Xystodesmidae (family), Polydesmida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) flat-backed millipede 32 pairs in males (excluding 1 pair of gonopods); 35 pairs in females[33][3]
33 pairs Geophilus hadesi (genus & species), Geophilidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[34] soil centipede
34 pairs Mongeperipatus solorzanoi (genus & species), Peripatidae (family), Onychophora (phylum) velvet worm 34 pairs in males; 39 to 41 pairs in females (usually 41)[35]
35 pairs Escaryus molodovae (genus & species), Schendylidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[36][37] soil centipede
36 pairs Glomeridesmida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) slug millipede usually 36 pairs in females; usually 35 pairs in males (including 1 pair of telepods);[25] some taxa deviate from these numbers[38][39]
37 pairs Escaryus vitimicus (genus & species), Schendylidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[36][37] soil centipede
38 pairs Epiperipatus titanicus (genus & species), Peripatidae (family), Onychophora (phylum) velvet worm 36 to 38 pairs in males; 36 to 39 pairs in females[40]
39 pairs Escaryus polygonatus (genus & species), Schendylidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[36][37] soil centipede
40 pairs Chamaesoma broelemanni (monotypic genus & species), Chamaesomatidae (family), Chordeumatida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) sausage millipede 40 pairs in males (excluding 2 pairs of gonopods); 42 pairs in females[41][3]
41 pairs Nannarrup (genus), Mecistocephalidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[42] soil centipede
42 pairs Xystrosoma santllorence (genus & species), Chamaesomatidae (family), Chordeumatida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) sausage millipede 42 pairs in females; 40 pairs in males (excluding 2 pairs of gonopods)[43]
43 pairs Dicellophilus carniolensis (genus & species), Mecistocephalidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[44] soil centipede
44 pairs Haasea hungarica (genus & species), Haaseidae (family), Chordeumatida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) sausage millipede 44 pairs in males (excluding 2 pairs of gonopods); 46 pairs in females[3]
45 pairs Dicellophilus limatus (genus & species), Mecistocephalidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[44] soil centipede
46 pairs Lipseuma (genus), Kashmireumatidae (family), Chordeumatida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) sausage millipede 46 pairs in females; 44 pairs in males (excluding 2 pairs of gonopods)[45]
47 pairs Mecistocephalus tahitiensis (genus & species), Mecistocephalidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[46] soil centipede
48 pairs Tianella (genus), Entomobielziidae (family), Chordeumatida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) sausage millipede usually 48 pairs in females; usually 46 pairs in males (excluding 2 pairs of gonopods); some species deviate from these numbers[47]
49 pairs Mecistocephalus (genus), Mecistocephalidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 49 pairs in most species; some species deviate from this number[48][46]
50 pairs Chordeumatida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) sausage millipede usually 50 pairs in females; usually 48 pairs in males (excluding 2 pairs of gonopods); some taxa deviate from these numbers[2][3]
51 pairs Mecistocephalus lifuensis (genus & species), Mecistocephalidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[46] soil centipede
52 pairs Metamastigophorophyllon (genus), Anthroleucosomatidae (family), Chordeumatida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) sausage millipede 52 pairs in females; 50 pairs in males (excluding 2 pairs of gonopods)[49][25][3]
53 pairs Krateraspis sselivanovi (genus & species), Mecistocephalidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[46] soil centipede
54 pairs Neocambrisoma raveni (genus & type species), Metopidiotrichidae (family), Chordeumatida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) sausage millipede maximum in class fixed by species;[5] 54 pairs in females; 51 pairs in males (excluding 3 pairs modified as gonopods or paragonopods)[50]
55 pairs Mesoschendyla cribrifera (genus & species), Schendylidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[51] soil centipede
57 pairs Mecistocephalus diversisternus (genus & species), Mecistocephalidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 57 or 59 pairs in each sex[52]
59 pairs Mecistocephalus smithii (genus & species), Mecistocephalidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum)[53] soil centipede
61 pairs Mairata itatiaiensis (genus & species), Geophilidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 61 pairs in males; 63 pairs in females[54]
63 pairs Mecistocephalus japonicus (genus & species), Mecistocephalidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 63 or 65 pairs in each sex[52]
65 pairs Aphilodon bahianus (genus & species), Geophilidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 63 or 65 pairs in each sex[55]
67 pairs Aphilodon silvestrii (genus & species), Geophilidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 67, 69, or 71 pairs in females; 69 pairs in males[55]
69 pairs Schendylops demelloi (genus & species), Schendylidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 69 pairs in males; 69 or 71 pairs in females (usually 71)[56]
71 pairs Geoperingueyia crabilli (genus & species), Geophilidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 71 pairs in males; 71, 73, or 75 pairs in females (usually 73)[57]
73 pairs Aphilodon pereirai (genus & species), Geophilidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 73 or 75 pairs in males; 73, 75, or 77 pairs in females[55]
75 pairs Stenotaenia asiaeminoris (genus & species), Geophilidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede 75 pairs in males; 77 or 79 pairs in females[58]
191 pairs Gonibregmatus plurimipes (genus & species), Gonibregmatidae (family), Geophilomorpha (order), Chilopoda (class), Myriapoda (subphylum), Arthropoda (phylum) soil centipede maximum in class;[5] based on a single specimen[59]
653 pairs Eumillipes persephone (monotypic genus & species), Siphonotidae (family), Polyzoniida (order), Diplopoda (class), Myriapoda (subphylum), Arthropoda (phylum) camphor millipede maximum in kingdom; 499 to 653 pairs in females; 387 to 407 pairs in males (excluding 2 pairs of gonopods)[1]

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