Mugato

From Memory Alpha

Mugatos are ape-like beings that inhabit the savannahs of the planet Neural. They are large, intimidating animals that could reach a height of two meters (not including their horns). Covered by a thick pelt of white fur all over their bodies with the exception of their faces and hands, they were similar to the great apes of Terra in their physical proportions and prehensile hands and feet. All of their teeth were sharp and serrated and their fangs contained a strong venom that was fatal to Humans and inhabitants of Neural alike within a matter of hours. Mugatos had large, thick horns projecting from the top of their craniums as well as smaller spikes running down the spine.