| Species (N=919) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Ourebia ourebi | 38.3 | 61.7 | 169 | 93 | 179 | 243 | 15.9 |
| Ovibos moschatus | 37.4 | 62.6 | 166 | 90 | 182 | 246 | 27.4 |
| Ovis ammon | 37.7 | 62.3 | 167 | 91 | 185 | 241 | 16.8 |
| Ovis aries | 37.7 | 62.3 | 168 | 90 | 185 | 241 | 22.8 |
| Ovis canadensis | 37.1 | 62.9 | 165 | 89 | 190 | 240 | 20.6 |
| Ovophis okinavensis | 46.0 | 54.0 | 207 | 108 | 153 | 217 | 19.0 |
| Ozotoceros bezoarticus | 33.9 | 66.1 | 145 | 87 | 205 | 247 | 21.9 |
| Pagellus bogaraveo | 44.1 | 55.9 | 189 | 116 | 198 | 188 | 15.0 |
| Palea steindachneri | 37.0 | 63.0 | 173 | 81 | 178 | 255 | 41.0 |
| Paleosuchus palpebrosus | 46.7 | 53.3 | 232 | 89 | 152 | 215 | 24.1 |
| Paleosuchus trigonatus | 46.5 | 53.5 | 233 | 87 | 151 | 217 | 30.9 |
| Pan paniscus | 44.6 | 55.4 | 208 | 97 | 178 | 201 | 55.0 |
| Pan troglodytes | 44.2 | 55.8 | 205 | 97 | 180 | 202 | 59.4 |
| Pandion haliaetus | 44.2 | 55.8 | 208 | 94 | 164 | 218 | 32.0 |
| Panthera leo | 40.9 | 59.1 | 172 | 108 | 193 | 211 | 27.0 |
| Panthera onca | 41.7 | 58.3 | 184 | 101 | 183 | 216 | 28.0 |
| Panthera pardus | 42.0 | 58.0 | 183 | 104 | 184 | 213 | 27.3 |
| Panthera tigris | 42.1 | 57.9 | 178 | 110 | 188 | 208 | 26.3 |
| Papio hamadryas | 43.6 | 56.4 | 202 | 96 | 172 | 214 | 37.5 |
| Parus major | 50.6 | 49.4 | 244 | 102 | 138 | 200 | 15.4 |
| Passer domesticus | 46.7 | 53.1 | 211 | 109 | 161 | 203 | 23.0 |
| Passer montanus | 47.7 | 52.3 | 219 | 108 | 157 | 201 | 13.1 |
| Pavo cristatus | 43.7 | 56.3 | 197 | 102 | 174 | 211 | 23.2 |
| Pecari tajacu | 39.8 | 60.2 | 183 | 94 | 178 | 241 | 31.5 |
| Pelecus cultratus | 42.5 | 57.5 | 182 | 112 | 186 | 211 | 11.0 |
| Pelomedusa subrufa | 37.5 | 62.5 | 176 | 82 | 188 | 242 | 20.1 |
| Pelusios castaneus | 40.6 | 59.4 | 202 | 77 | 177 | 232 | 41.0 |
| Peponocephala electra | 39.8 | 60.2 | 186 | 86 | 176 | 236 | 47.0 |
| Perameles gunnii | 35.5 | 64.5 | 152 | 90 | 205 | 235 | 6.1 |
| Perca flavescens | 42.5 | 57.5 | 182 | 112 | 197 | 200 | 12.0 |
| Perca fluviatilis | 43.7 | 56.3 | 188 | 114 | 196 | 193 | 22.0 |
| Percopsis transmontana | 47.8 | 52.2 | 205 | 125 | 164 | 197 | 6.0 |
| Periparus ater | 49.7 | 50.3 | 238 | 102 | 148 | 196 | 9.5 |
| Perodicticus potto | 44.4 | 55.6 | 203 | 101 | 168 | 212 | 26.8 |
| Petaurista alborufus | 40.8 | 59.2 | 174 | 105 | 196 | 209 | 21.4 |
| Petaurus breviceps | 37.0 | 63.0 | 157 | 95 | 193 | 237 | 17.8 |
| Petromyzon marinus | 38.1 | 61.9 | 168 | 95 | 205 | 222 | 9.0 |
| Phacochoerus africanus | 40.0 | 60.0 | 179 | 96 | 177 | 236 | 20.9 |
| Phaeognathus hubrichti | 34.6 | 65.4 | 150 | 88 | 212 | 238 | 19.7 |
| Phaethon rubricauda | 49.1 | 50.9 | 221 | 115 | 155 | 193 | 32.7 |