In most animals, taste has evolved to avoid all things bitter — a key to survival — to avoid eating
something that could be
poisonous via taste receptors, known as Tas2r, that quickly spring
into action and elicit the bitter sensation.
Protecting your pet comes down to three major things: knowing what's
poisonous, recognizing the signs that
something is wrong, and knowing what to do if you suspect your pet has ingested or otherwise come
into contact with a poison.