| Species (N=390) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Trachypithecus obscurus | 31.4 | 68.6 | 55 | 10 | 59 | 83 | 33.9 |
| Trachypithecus pileatus | 33.8 | 66.2 | 57 | 13 | 57 | 80 | 25.2 |
| Trachypithecus vetulus | 31.9 | 68.1 | 53 | 13 | 66 | 75 | 26.1 |
| Tragelaphus angasii | 29.4 | 70.6 | 47 | 12 | 59 | 83 | 18.5 |
| Tragelaphus eurycerus | 31.8 | 68.2 | 49 | 15 | 52 | 85 | 21.9 |
| Tragelaphus imberbis | 32.3 | 67.7 | 50 | 14 | 53 | 81 | 19.8 |
| Tragelaphus scriptus | 31.3 | 68.7 | 50 | 13 | 53 | 85 | 15.3 |
| Tragelaphus spekii | 31.8 | 68.2 | 50 | 14 | 52 | 85 | 22.6 |
| Tragelaphus strepsiceros | 31.3 | 68.7 | 50 | 13 | 51 | 87 | 23.5 |
| Tremarctos ornatus | 32.8 | 67.2 | 51 | 16 | 56 | 81 | 39.0 |
| Trichechus manatus | 36.3 | 63.7 | 60 | 14 | 63 | 67 | 65.0 |
| Trichosurus vulpecula | 33.8 | 66.2 | 57 | 14 | 52 | 87 | 15.9 |
| Tupaia belangeri | 34.3 | 65.7 | 54 | 16 | 54 | 80 | 11.1 |
| Tursiops truncatus | 37.5 | 62.5 | 59 | 13 | 52 | 68 | 51.6 |
| Uncia uncia | 33.8 | 66.2 | 52 | 17 | 56 | 79 | 21.2 |
| Urocyon cinereoargenteus | 34.8 | 65.2 | 53 | 18 | 58 | 75 | 16.2 |
| Ursus americanus | 34.8 | 65.2 | 52 | 19 | 55 | 78 | 34.0 |
| Ursus arctos | 36.8 | 63.2 | 53 | 22 | 55 | 74 | 40.0 |
| Ursus maritimus | 34.3 | 65.7 | 51 | 19 | 57 | 77 | 43.8 |
| Ursus thibetanus | 35.3 | 64.7 | 53 | 18 | 53 | 77 | 39.2 |
| Varecia variegata | 32.9 | 67.1 | 54 | 14 | 63 | 76 | 37.0 |
| Vicugna vicugna | 35.3 | 64.7 | 55 | 17 | 56 | 76 | 31.6 |
| Vombatus ursinus | 35.7 | 64.3 | 61 | 14 | 46 | 89 | 30.0 |
| Vulpes corsac | 39.2 | 60.8 | 57 | 23 | 52 | 72 | 13.0 |
| Vulpes lagopus | 38.7 | 61.3 | 58 | 21 | 53 | 72 | 16.3 |
| Vulpes vulpes | 34.8 | 65.2 | 51 | 20 | 58 | 75 | 21.3 |
| Vulpes zerda | 34.3 | 65.7 | 51 | 19 | 58 | 76 | 16.3 |
| Zaglossus bruijni | 38.1 | 61.9 | 61 | 19 | 64 | 66 | 41.2 |
| Zalophus californianus | 33.3 | 66.7 | 54 | 14 | 54 | 82 | 35.7 |
| Ziphius cavirostris | 35.8 | 64.2 | 60 | 12 | 50 | 79 | 62.0 |