Comparison of the testical, breast, and genitalia sizes of the great apes : r/Damnthatsinteresting

PDF) When men appear smaller or larger than they really are: Preliminary evidence that women are fooled by size illusions in attractiveness judgment tasks

Tiny Genetic Differences between Humans and Other Primates Pervade the Genome

Sexual Dimorphism - Anthropological Musings and Concepts

Primates – An Introduction to Anthropology: the Biological and Cultural Evolution of Humans

Newborn Kangaroos are about the size of a knuckle. After birth, joeys travel, unassisted, through their mom's thick fur to the comfort and safety of the pouch. : r/Damnthatsinteresting

Comparing the Performances of Apes (Gorilla gorilla, Pan troglodytes, Pongo pygmaeus) and Human Children (Homo sapiens) in the Floating Peanut Task

While many animals pant or sweat to cool down, it turns out Echidnas instead opt to blow snot bubbles and perform bellyflops : r/Awwducational

While many animals pant or sweat to cool down, it turns out Echidnas instead opt to blow snot bubbles and perform bellyflops : r/Awwducational

Evolution of genes involved in the unusual genitals of the bear macaque, Macaca arctoides

Why humans have big penises but small testicles

FIG URE 7 Relative size of genital cortex varies across species and

The “Avoid the Empty Cup” Hypothesis Does Not Explain Great Apes' (Gorilla gorilla, Pan paniscus, Pan troglodytes, Pongo abelii) Responses in Two Three-Cup One-Item Inference by Exclusion Tasks