| Species | Spleen (grams) | Body Mass (grams) | Alternative Spleen Mass? | Reference for Spleen Mass and Corresponding Body Mass | Group Size (number of individuals in foraging and larger social units) | Population Density (individuals / km2) | Percentage of Time Terrestrial | Percentage Leaves in Diet | Percentage of Fruit in Diet |
| Alouatta caraya | 9.24 | 4983 | Stahl et al. 1968 | 7.3 | 159 | 76 | 24 | ||
| Alouatta palliata | 45.68 | 6174 | Crile & Quiring 1940 | 13.5 | 32.6 | 56 | 43 | ||
| Aotus trivirgatus | 1.94 | 739 | Baer 1994 | 3.4 | 29.7 | 10 | 75 | ||
| Ateles geoffroyi | 40.8 | 7630 | Crile & Quiring 1940 | 52.3 | 14.4 | 0 | 13 | 85 | |
| Callithrix jacchus | 0.423 | 307.72 | Wadsworth et al. 1981 | 8.2 | 940 | 0 | 33 | ||
| Cebus apella | 2.37 | 2160 | Schwartz et al. 1974 | 15.1 | 22.9 | 10 | 65 | ||
| Cebus capucinus | 11.3 | 3101 | Crile & Quiring 1940 | 16.6 | 10.7 | 10 | 62 | ||
| Cercocebus galeritus | 5.35 | 6000 | Kennard & Willner 1941c | 18.7 | 120 | 14 | 78 | ||
| Cercocebus torquatus | 9 | 6100 | Kennard & Willner 1941c | 23.2 | 52.2 | 70 | 13 | 83 | |
| Cercopithecus aethiops | 3 | 1422 | yes | Sauer and Fegley 1960 | 25.3 | 66.4 | 45 | 20 | 59 |
| Cercopithecus mitis | 85.16 | 4937 | Crile & Quiring 1940 | 16.9 | 108 | 0 | 20 | 52 | |
| Galago garnettii | 2.17 | 800 | Makita et al. 1989 | 3 | 34.5 | 0 | 0 | 50 | |
| Gorilla gorilla | 192.8 | 65000 | Kennard & Willner 1941a | 15.8 | 1 | 95 | 93 | 1 | |
| Homo sapiens | 168 | 56000 | yes | Spector 1956 | 148 | 100 | |||
| Hylobates lar | 14 | 5700 | Kennard & Wellner 1941a | 3.8 | 8.3 | 0 | 30 | 59 | |
| Macaca arctoides | 9.77 | 6200 | yes | Larson 1982 | 27.5 | ||||
| Macaca cyclopis | 8 | 10300 | Makita et al. 1984 | 12.8 | |||||
| Macaca fascicularis | 7.19 | 3300 | yes | Larson 1982 | 25.5 | 58.5 | 5 | 10 | 73 |
| Macaca fuscata | 4.5675 | 5825 | Makita et al. 1984, 1985 | 55.4 | 31.5 | 78 | 22 | ||
| Macaca mulatta | 4.31 | 5210 | yes | Larson 1982 | 42.1 | 113 | 87 | 12 | |
| Macaca nemestrina | 10.13 | 5150 | Larson 1982 | 40.2 | 34.8 | 25 | 14 | 77 | |
| Macaca radiata | 7.65 | 4530 | Larson 1982 | 25.5 | 35 | 30 | |||
| Pan troglodytes | 95 | 30100 | Kennard & Willner 1941a | 49.2 | 3.5 | 50 | 26 | 66 | |
| Papio anubis | 16.9 | 12700 | yes | Gest & Siegel 1983 | 58.6 | 15 | 80 | 35 | 62 |
| Papio cynocephalus | 17.79 | 12970 | yes | Larson 1982 | 62.5 | 20.8 | 90 | 21 | 61 |
| Papio ursinus | 18.4 | 14500 | McConnell et al. 1974 | 51.2 | 8.3 | 12 | 87 | ||
| Saguinus oedipus | 1.65 | 793 | Crile & Quiring 1940 | 5.3 | 35.8 | 5 | 44 | ||
| Saimiri oerstedii | 0.9 | 607 | Crile & Quiring 1940 | 30.2 | 83 | 0 | 80 | ||
| Saimiri sciureus | 0.95 | 662 | yes | Middleton & Rosal 1972 | 43.1 | 86.7 | 0 | 28 | |
| Tarsius spectrum | 0.031 | 168 | Kennard & Willner 1941c | 3 | 550 | 0 | 0 |