| Species (N=919) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Ourebia ourebi | 39.4 | 60.6 | 394 | 149 | 387 | 448 | 15.9 |
| Ovibos moschatus | 39.6 | 60.4 | 401 | 145 | 389 | 443 | 27.4 |
| Ovis ammon | 38.7 | 61.3 | 385 | 148 | 405 | 440 | 16.8 |
| Ovis aries | 39.0 | 61.0 | 390 | 148 | 400 | 440 | 22.8 |
| Ovis canadensis | 38.3 | 61.7 | 389 | 139 | 401 | 449 | 20.6 |
| Ovophis okinavensis | 42.9 | 57.1 | 437 | 137 | 326 | 438 | 19.0 |
| Ozotoceros bezoarticus | 34.8 | 65.2 | 338 | 142 | 445 | 453 | 21.9 |
| Pagellus bogaraveo | 49.4 | 50.6 | 457 | 222 | 368 | 328 | 15.0 |
| Palea steindachneri | 37.1 | 62.9 | 387 | 126 | 368 | 500 | 41.0 |
| Paleosuchus palpebrosus | 48.8 | 51.2 | 500 | 169 | 298 | 404 | 24.1 |
| Paleosuchus trigonatus | 47.2 | 52.8 | 495 | 153 | 301 | 425 | 30.9 |
| Pan paniscus | 44.4 | 55.6 | 476 | 136 | 349 | 417 | 55.0 |
| Pan troglodytes | 44.3 | 55.7 | 466 | 144 | 361 | 407 | 59.4 |
| Pandion haliaetus | 43.8 | 56.2 | 474 | 130 | 325 | 449 | 32.0 |
| Panthera leo | 41.9 | 58.1 | 406 | 168 | 363 | 432 | 27.0 |
| Panthera onca | 41.4 | 58.6 | 399 | 170 | 377 | 429 | 28.0 |
| Panthera pardus | 41.5 | 58.5 | 402 | 169 | 374 | 430 | 27.3 |
| Panthera tigris | 40.9 | 59.1 | 398 | 166 | 379 | 435 | 26.3 |
| Papio hamadryas | 43.4 | 56.6 | 461 | 137 | 344 | 436 | 37.5 |
| Parus major | 48.4 | 51.6 | 528 | 139 | 306 | 405 | 15.4 |
| Passer domesticus | 49.3 | 50.7 | 505 | 174 | 293 | 406 | 23.0 |
| Passer montanus | 49.1 | 50.9 | 496 | 180 | 299 | 403 | 13.1 |
| Pavo cristatus | 44.0 | 56.0 | 471 | 135 | 353 | 419 | 23.2 |
| Pecari tajacu | 40.3 | 59.7 | 409 | 147 | 356 | 466 | 31.5 |
| Pelecus cultratus | 41.3 | 58.7 | 364 | 207 | 401 | 410 | 11.0 |
| Pelomedusa subrufa | 39.0 | 61.0 | 405 | 132 | 383 | 458 | 20.1 |
| Pelusios castaneus | 39.6 | 60.4 | 414 | 135 | 389 | 448 | 41.0 |
| Peponocephala electra | 38.0 | 62.0 | 391 | 133 | 411 | 443 | 47.0 |
| Perameles gunnii | 34.7 | 65.3 | 345 | 133 | 438 | 462 | 6.1 |
| Perca flavescens | 45.3 | 54.7 | 412 | 214 | 389 | 366 | 12.0 |
| Perca fluviatilis | 44.9 | 55.1 | 404 | 216 | 401 | 360 | 22.0 |
| Percopsis transmontana | 52.2 | 47.8 | 475 | 246 | 330 | 330 | 6.0 |
| Periparus ater | 50.4 | 49.6 | 543 | 151 | 296 | 388 | 9.5 |
| Perodicticus potto | 41.5 | 58.5 | 427 | 145 | 363 | 443 | 26.8 |
| Petaurista alborufus | 36.7 | 63.3 | 362 | 144 | 439 | 433 | 21.4 |
| Petaurus breviceps | 37.2 | 62.8 | 364 | 149 | 437 | 428 | 17.8 |
| Petromyzon marinus | 36.1 | 63.9 | 354 | 143 | 452 | 428 | 9.0 |
| Phacochoerus africanus | 39.0 | 61.0 | 394 | 143 | 376 | 465 | 20.9 |
| Phaeognathus hubrichti | 32.0 | 68.0 | 295 | 144 | 476 | 457 | 19.7 |
| Phaethon rubricauda | 48.8 | 51.2 | 518 | 149 | 301 | 400 | 32.7 |