| Species (N=919) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Ourebia ourebi | 42.7 | 57.3 | 212 | 79 | 179 | 211 | 15.9 |
| Ovibos moschatus | 39.6 | 60.4 | 195 | 75 | 190 | 221 | 27.4 |
| Ovis ammon | 40.5 | 59.5 | 197 | 78 | 190 | 214 | 16.8 |
| Ovis aries | 39.9 | 60.1 | 191 | 80 | 194 | 214 | 22.8 |
| Ovis canadensis | 39.8 | 60.2 | 196 | 75 | 192 | 218 | 20.6 |
| Ovophis okinavensis | 41.6 | 58.4 | 220 | 63 | 191 | 206 | 19.0 |
| Ozotoceros bezoarticus | 37.4 | 62.6 | 177 | 78 | 208 | 218 | 21.9 |
| Pagellus bogaraveo | 45.0 | 55.0 | 215 | 93 | 214 | 162 | 15.0 |
| Palea steindachneri | 38.5 | 61.5 | 197 | 66 | 180 | 241 | 41.0 |
| Paleosuchus palpebrosus | 45.2 | 54.8 | 249 | 60 | 153 | 222 | 24.1 |
| Paleosuchus trigonatus | 47.4 | 52.6 | 263 | 61 | 142 | 218 | 30.9 |
| Pan paniscus | 43.3 | 56.7 | 222 | 73 | 182 | 204 | 55.0 |
| Pan troglodytes | 43.8 | 56.2 | 224 | 74 | 179 | 204 | 59.4 |
| Pandion haliaetus | 44.7 | 55.3 | 233 | 73 | 166 | 212 | 32.0 |
| Panthera leo | 41.9 | 58.1 | 199 | 86 | 198 | 198 | 27.0 |
| Panthera onca | 41.6 | 58.4 | 198 | 85 | 198 | 200 | 28.0 |
| Panthera pardus | 41.9 | 58.1 | 191 | 94 | 205 | 191 | 27.3 |
| Panthera tigris | 40.7 | 59.3 | 191 | 86 | 207 | 197 | 26.3 |
| Papio hamadryas | 44.1 | 55.9 | 236 | 64 | 161 | 219 | 37.5 |
| Parus major | 49.4 | 50.6 | 272 | 66 | 153 | 193 | 15.4 |
| Passer domesticus | 47.1 | 52.9 | 248 | 74 | 156 | 206 | 23.0 |
| Passer montanus | 47.1 | 52.9 | 241 | 81 | 162 | 200 | 13.1 |
| Pavo cristatus | 45.3 | 54.7 | 243 | 67 | 181 | 193 | 23.2 |
| Pecari tajacu | 42.1 | 57.9 | 213 | 74 | 164 | 230 | 31.5 |
| Pelecus cultratus | 39.5 | 60.5 | 178 | 92 | 207 | 207 | 11.0 |
| Pelomedusa subrufa | 37.1 | 62.9 | 204 | 51 | 207 | 225 | 20.1 |
| Pelusios castaneus | 40.6 | 59.4 | 225 | 55 | 189 | 221 | 41.0 |
| Peponocephala electra | 38.5 | 61.5 | 195 | 67 | 204 | 215 | 47.0 |
| Perameles gunnii | 35.5 | 64.5 | 181 | 61 | 214 | 225 | 6.1 |
| Perca flavescens | 45.0 | 55.0 | 220 | 88 | 216 | 160 | 12.0 |
| Perca fluviatilis | 43.9 | 56.1 | 209 | 91 | 220 | 164 | 22.0 |
| Percopsis transmontana | 47.4 | 52.6 | 229 | 95 | 171 | 188 | 6.0 |
| Periparus ater | 51.3 | 48.7 | 271 | 80 | 144 | 189 | 9.5 |
| Perodicticus potto | 40.4 | 59.6 | 208 | 67 | 189 | 217 | 26.8 |
| Petaurista alborufus | 40.3 | 59.7 | 199 | 75 | 210 | 196 | 21.4 |
| Petaurus breviceps | 38.9 | 61.1 | 188 | 77 | 204 | 212 | 17.8 |
| Petromyzon marinus | 34.6 | 65.4 | 165 | 70 | 226 | 218 | 9.0 |
| Phacochoerus africanus | 38.2 | 61.8 | 191 | 69 | 190 | 231 | 20.9 |
| Phaeognathus hubrichti | 31.3 | 68.7 | 148 | 66 | 243 | 227 | 19.7 |
| Phaethon rubricauda | 49.7 | 50.3 | 269 | 77 | 164 | 186 | 32.7 |