| Species (N=917) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Capricornis crispus | 32.8 | 67.2 | 50 | 16 | 54 | 81 | 24.0 |
| Capricornis sumatraensis | 34.3 | 65.7 | 49 | 19 | 55 | 75 | 18.5 |
| Carassius auratus | 37.6 | 62.4 | 42 | 20 | 45 | 58 | 41.0 |
| Carcharhinus acronotus | 29.2 | 70.8 | 39 | 10 | 54 | 65 | 19.0 |
| Carcharhinus brevipinna | 29.2 | 70.8 | 40 | 9 | 53 | 66 | 19.0 |
| Carcharhinus leucas | 29.2 | 70.8 | 39 | 10 | 54 | 65 | 32.0 |
| Carcharhinus obscurus | 26.8 | 73.2 | 36 | 9 | 57 | 66 | 35.0 |
| Carcharhinus plumbeus | 29.8 | 70.2 | 39 | 11 | 54 | 64 | 32.0 |
| Carcharhinus sorrah | 29.8 | 70.2 | 41 | 9 | 53 | 65 | 8.0 |
| Carcharias taurus | 32.7 | 67.3 | 43 | 12 | 47 | 66 | 12.0 |
| Carcharodon carcharias | 35.1 | 64.9 | 44 | 15 | 44 | 65 | 50.0 |
| Cardinalis cardinalis | 43.5 | 56.5 | 62 | 11 | 48 | 47 | 28.5 |
| Carduelis pinus | 42.9 | 57.1 | 60 | 12 | 45 | 51 | 11.0 |
| Carduelis psaltria | 41.7 | 58.3 | 59 | 11 | 45 | 53 | 5.7 |
| Carduelis spinus | 43.5 | 56.5 | 62 | 11 | 43 | 52 | 13.5 |
| Caretta caretta | 35.8 | 64.2 | 51 | 8 | 38 | 68 | 37.0 |
| Carollia perspicillata | 33.8 | 66.2 | 53 | 16 | 60 | 75 | 17.0 |
| Carpiodes carpio | 41.7 | 58.3 | 46 | 24 | 44 | 54 | 10.0 |
| Carpodacus erythrinus | 45.8 | 54.2 | 65 | 12 | 44 | 47 | 9.0 |
| Castor canadensis | 33.3 | 66.7 | 56 | 12 | 54 | 82 | 23.4 |
| Casuarius casuarius | 45.8 | 54.2 | 66 | 11 | 34 | 57 | 30.0 |
| Cathartes aura | 45.0 | 55.0 | 67 | 10 | 39 | 55 | 20.8 |
| Catopuma temminckii | 29.9 | 70.1 | 49 | 12 | 57 | 86 | 23.0 |
| Catostomus commersonii | 39.9 | 60.1 | 46 | 21 | 43 | 58 | 12.0 |
| Cavia porcellus | 32.4 | 67.6 | 52 | 14 | 62 | 76 | 12.0 |
| Cebus albifrons | 29.9 | 70.1 | 46 | 14 | 58 | 83 | 40.4 |
| Cebus apella | 31.8 | 68.2 | 49 | 15 | 55 | 82 | 46.0 |
| Cecropis daurica | 41.1 | 58.9 | 58 | 11 | 44 | 55 | 9.0 |
| Cephalophus dorsalis | 31.8 | 68.2 | 52 | 12 | 54 | 83 | 17.5 |
| Cephalophus jentinki | 30.8 | 69.2 | 48 | 14 | 58 | 81 | 21.0 |
| Cephalophus natalensis | 31.8 | 68.2 | 49 | 15 | 58 | 79 | 15.2 |
| Cephalophus nigrifrons | 32.3 | 67.7 | 50 | 15 | 57 | 79 | 17.9 |
| Cephalophus rufilatus | 33.3 | 66.7 | 51 | 16 | 56 | 78 | 15.2 |
| Cephalophus silvicultor | 30.3 | 69.7 | 47 | 14 | 59 | 81 | 22.5 |
| Ceratotherium simum | 35.3 | 64.7 | 60 | 13 | 52 | 82 | 45.0 |
| Cercocebus torquatus | 37.3 | 62.7 | 66 | 9 | 45 | 81 | 46.0 |
| Cercopithecus diana | 35.4 | 64.6 | 60 | 8 | 44 | 80 | 35.1 |
| Cercopithecus lhoesti | 36.2 | 63.8 | 65 | 10 | 46 | 86 | 24.1 |
| Cercopithecus mitis | 37.7 | 62.3 | 65 | 13 | 46 | 83 | 37.8 |
| Cervus elaphus | 26.9 | 73.1 | 43 | 11 | 63 | 84 | 31.5 |