Slow Loris
The slow loris doesn’t have much going for it protection wise at first glance but they’ve got some tricks up their sleeve. And by tricks up their sleeve I mean they have toxic glands on the inside of their elbows that they lick and rub all over their body, making them not so fun to take a bite out of. The toxin combined with their saliva makes their bites nasty too, they can even send humans into anaphylactic shock.
Source: https://www.wildlifealliance.org/meet-the-slow-loris/