#885: The Treeshrew has the highest brain:body ratio of any mammal.

The Treeshrews are not actually a shrew at all. Currently, she is considered to be more closely related to the colugo and primate Families. There are 20 species, spread across Southeast Asia. Her brain to body ratio is the highest of any other mammal, including humans, although this is in part due to her small size. She favours an omnivorous diet, feeding on insects, small vertebrates, nuts and seeds. Her maternal skills are relatively weak - her young are born weak and hairless, into a nest of dried leaves, and she suckles them only for a few minutes each day. They grow fast, and will leave the nest within a month and become sexually mature at about four months old.