| Species (N=922) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Capra sibirica | 39.6 | 60.4 | 552 | 449 | 598 | 930 | 22.3 |
| Capreolus capreolus | 37.7 | 62.3 | 515 | 437 | 622 | 950 | 17.5 |
| Capricornis crispus | 40.1 | 59.9 | 579 | 435 | 569 | 944 | 24.0 |
| Capricornis sumatraensis | 40.3 | 59.7 | 571 | 447 | 576 | 933 | 18.5 |
| Carassius auratus | 45.3 | 54.7 | 640 | 554 | 528 | 913 | 41.0 |
| Carcharhinus acronotus | 38.5 | 61.5 | 560 | 451 | 689 | 929 | 19.0 |
| Carcharhinus brevipinna | 39.0 | 61.0 | 566 | 457 | 680 | 923 | 19.0 |
| Carcharhinus leucas | 38.1 | 61.9 | 545 | 456 | 700 | 923 | 32.0 |
| Carcharhinus longimanus | 39.1 | 60.9 | 571 | 455 | 675 | 924 | 22.0 |
| Carcharhinus obscurus | 39.1 | 60.9 | 570 | 456 | 678 | 922 | 35.0 |
| Carcharhinus plumbeus | 39.3 | 60.7 | 579 | 454 | 669 | 927 | 32.0 |
| Carcharhinus sorrah | 39.2 | 60.8 | 576 | 453 | 672 | 926 | 8.0 |
| Carcharias taurus | 38.9 | 61.1 | 568 | 452 | 666 | 938 | 12.0 |
| Carcharodon carcharias | 39.6 | 60.4 | 575 | 465 | 669 | 918 | 50.0 |
| Cardinalis cardinalis | 45.8 | 54.2 | 657 | 522 | 548 | 846 | 28.5 |
| Carduelis pinus | 45.0 | 55.0 | 640 | 518 | 560 | 853 | 11.0 |
| Carduelis psaltria | 45.2 | 54.8 | 642 | 520 | 552 | 858 | 5.7 |
| Carduelis spinus | 45.4 | 54.6 | 646 | 521 | 553 | 853 | 13.5 |
| Caretta caretta | 39.0 | 61.0 | 582 | 424 | 579 | 996 | 37.0 |
| Carettochelys insculpta | 39.4 | 60.6 | 589 | 423 | 543 | 1012 | 38.4 |
| Carollia perspicillata | 41.6 | 58.4 | 598 | 457 | 600 | 880 | 17.0 |
| Carpiodes carpio | 47.1 | 52.9 | 649 | 596 | 528 | 868 | 10.0 |
| Carpodacus erythrinus | 45.2 | 54.8 | 636 | 525 | 556 | 854 | 9.0 |
| Castor canadensis | 40.2 | 59.8 | 562 | 422 | 573 | 892 | 23.4 |
| Casuarius casuarius | 44.0 | 56.0 | 645 | 481 | 549 | 884 | 30.0 |
| Cathartes aura | 46.1 | 53.9 | 692 | 498 | 538 | 851 | 20.8 |
| Catopuma temminckii | 40.1 | 59.9 | 559 | 459 | 593 | 925 | 23.0 |
| Catostomus commersonii | 46.4 | 53.6 | 633 | 588 | 544 | 866 | 12.0 |
| Cavia porcellus | 38.3 | 61.7 | 510 | 450 | 632 | 916 | 12.0 |
| Cebus albifrons | 40.7 | 59.3 | 593 | 434 | 606 | 890 | 40.4 |
| Cebus apella | 40.4 | 59.3 | 593 | 426 | 598 | 899 | 46.0 |
| Cecropis daurica | 46.3 | 53.7 | 666 | 526 | 523 | 859 | 9.0 |
| Cephalophus dorsalis | 40.2 | 59.8 | 567 | 450 | 577 | 934 | 17.5 |
| Cephalophus jentinki | 39.4 | 60.6 | 466 | 371 | 483 | 802 | 21.0 |
| Cephalophus natalensis | 40.0 | 60.0 | 569 | 442 | 574 | 940 | 15.2 |
| Cephalophus nigrifrons | 39.8 | 60.2 | 567 | 437 | 575 | 946 | 17.9 |
| Cephalophus rufilatus | 39.8 | 60.2 | 569 | 437 | 573 | 946 | 15.2 |
| Cephalophus silvicultor | 39.9 | 60.1 | 566 | 442 | 577 | 940 | 22.5 |
| Ceratotherium simum | 39.7 | 60.3 | 586 | 425 | 585 | 952 | 45.0 |
| Cercocebus torquatus | 41.9 | 58.1 | 615 | 439 | 580 | 882 | 46.0 |