| Species (N=919) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Ourebia ourebi | 39.9 | 60.1 | 99 | 39 | 99 | 109 | 15.9 |
| Ovibos moschatus | 41.9 | 58.1 | 104 | 41 | 97 | 104 | 27.4 |
| Ovis ammon | 41.3 | 58.7 | 100 | 43 | 99 | 104 | 16.8 |
| Ovis aries | 42.2 | 57.8 | 105 | 41 | 94 | 106 | 22.8 |
| Ovis canadensis | 42.5 | 57.5 | 105 | 42 | 94 | 105 | 20.6 |
| Ovophis okinavensis | 42.0 | 58.0 | 108 | 36 | 89 | 110 | 19.0 |
| Ozotoceros bezoarticus | 35.3 | 64.7 | 82 | 40 | 115 | 109 | 21.9 |
| Pagellus bogaraveo | 50.1 | 49.9 | 119 | 56 | 106 | 68 | 15.0 |
| Palea steindachneri | 39.1 | 60.9 | 106 | 31 | 93 | 120 | 41.0 |
| Paleosuchus palpebrosus | 44.5 | 55.5 | 110 | 45 | 96 | 97 | 24.1 |
| Paleosuchus trigonatus | 45.1 | 54.9 | 115 | 42 | 93 | 98 | 30.9 |
| Pan paniscus | 40.5 | 59.5 | 105 | 35 | 101 | 105 | 55.0 |
| Pan troglodytes | 42.2 | 57.8 | 110 | 36 | 98 | 102 | 59.4 |
| Pandion haliaetus | 45.5 | 54.5 | 118 | 42 | 90 | 102 | 32.0 |
| Panthera leo | 40.3 | 59.7 | 99 | 41 | 98 | 109 | 27.0 |
| Panthera onca | 40.6 | 59.4 | 97 | 44 | 100 | 106 | 28.0 |
| Panthera pardus | 40.9 | 59.1 | 98 | 44 | 100 | 105 | 27.3 |
| Panthera tigris | 43.5 | 56.5 | 108 | 43 | 90 | 106 | 26.3 |
| Papio hamadryas | 44.1 | 55.9 | 109 | 43 | 88 | 105 | 37.5 |
| Parus major | 46.7 | 53.3 | 119 | 45 | 88 | 99 | 15.4 |
| Passer domesticus | 47.0 | 53.0 | 119 | 46 | 86 | 100 | 23.0 |
| Passer montanus | 46.4 | 53.6 | 119 | 44 | 87 | 101 | 13.1 |
| Pavo cristatus | 45.5 | 54.5 | 119 | 41 | 87 | 105 | 23.2 |
| Pecari tajacu | 41.2 | 58.8 | 104 | 39 | 89 | 115 | 31.5 |
| Pelecus cultratus | 40.1 | 59.9 | 91 | 49 | 112 | 97 | 11.0 |
| Pelomedusa subrufa | 34.4 | 65.6 | 88 | 33 | 106 | 125 | 20.1 |
| Pelusios castaneus | 43.3 | 56.7 | 101 | 31 | 80 | 93 | 41.0 |
| Peponocephala electra | 40.3 | 59.7 | 102 | 38 | 100 | 107 | 47.0 |
| Perameles gunnii | 34.2 | 65.8 | 81 | 39 | 115 | 116 | 6.1 |
| Perca flavescens | 45.6 | 54.4 | 102 | 57 | 120 | 70 | 12.0 |
| Perca fluviatilis | 48.7 | 51.3 | 111 | 59 | 112 | 67 | 22.0 |
| Percopsis transmontana | 54.4 | 45.6 | 130 | 60 | 92 | 67 | 6.0 |
| Periparus ater | 49.9 | 50.1 | 123 | 52 | 85 | 91 | 9.5 |
| Perodicticus potto | 40.8 | 59.2 | 102 | 39 | 93 | 112 | 26.8 |
| Petaurista alborufus | 43.8 | 56.2 | 104 | 48 | 102 | 93 | 21.4 |
| Petaurus breviceps | 35.8 | 64.2 | 89 | 36 | 117 | 107 | 17.8 |
| Petromyzon marinus | 39.3 | 60.7 | 92 | 46 | 117 | 96 | 9.0 |
| Phacochoerus africanus | 38.9 | 61.1 | 95 | 40 | 90 | 122 | 20.9 |
| Phaeognathus hubrichti | 31.9 | 68.1 | 69 | 42 | 122 | 115 | 19.7 |
| Phaethon rubricauda | 49.0 | 51.0 | 123 | 49 | 91 | 88 | 32.7 |