Philip José Farmer 
Rastignac The Devil [EPUB ebook] 

On a human colony around another star, there are two other sentient hominids: reptiles, and amphibians. All three species wear living cloaks, called skins, which allow them telepathy and empathy with every other skin-wearer, and which provides a conscience, complete with electric shocks for bad behavior. Rastignac wants to overthrow the skins.