Originally Posted By: LeakySeals
Ethylene glycol (primary additive in coolant) tastes sweet to animals. Poisoning and death can occur in hours. Why many coolant manufacturers use a "bittering agent" additive. A pressure wash or a scrub with car wash soap, etc. and hose rinse should do it.
Animals will still lick the stuff - cats have a slightly less chance since they don't have taste buds for sweet tastes - which unfortunately ethylene glycol is one of them. A lot of municipalities are now running glycerin-based coolant in their heavy-duty fleet.
For me, I prefer to do my coolant changes outside and rinse off or inside with containment - I don't know about other automakers, but Toyota does provide on their block drains a nipple to slide a piece of tubing to help route coolant into a container.
And in case you or an animal is poisoned with EG, the antidote until a doctor or vet can be seen is vodka or any strong liquor.