Eventually the bite wasn't painful, it just tingled a bit and felt more pleasurable.
A sloth scientist looked at the two ferals holding a clipboard and writing a few notes of how they reacted, simply not impressed but jolt having the ability of electricity, and angder being part mechanical had the scientist grow curious of the two,. Reactions, communication, ect. They simply watched the two just curiously but also had idea's in mind but perhaps they couldn't jump to advanced things so quickly.
A scientist walked by lookin at subzero. "Oh come, I didn't see you in your cell, I was frightened lets go sub" the rat said kindly.