First time was really scary. I'm looking at a house my GF wanted to buy. She had her little Pesky Eskie with her and all of a sudden the dog is traipsing around like someone on acid. I knew immediately what was happening and sure enough a few minutes later the dog is laid out stiff as a board, eyes wide open, and screaming like a banshee. We rushed her up to the Vet and gave something to ease the effects and she slowly came out of it.
The first time my senior English Setter got a cane toad, I took her to the emergency vet. (My senior dogs made sure they got sick during premium cost off-hours and weekends.) 2nd time, I gave her an Ativan and watched her rotate her head tracking the hallucinations.