The best thing is to place the ant traps where your dog can't get to them, inside counters, above nose reach, ect... Ant traps that are just sticky are safe, but ant traps that kill or that put a chemical on the ant to take back to the colony to kill can be dangerous.

Also you might want to try Ant Kill, which is a liquid, just a drop here and there give amazing results and the dose you put around the house is so low as to pose no threat.

Cheers,
T