While not fatal, male platypus venom is unbelievably painful to humans, and it can result in lingering pain at the injury site and associated limb for months.
The slow loris possesses sacks beneath its forelimbs that it licks prior to biting, which transfers venom to the mouth.
Hispaniolan solenodons inject venom through their lower incisors that can cause paralysis and death.
It is a nocturnal insectivore that resides in burrows or hollow trees emerging at night to hunt frogs, reptiles, and small rodents.