Poor Pinot! I'll bet it was some kind of toxin emitted by the toad, and that it will pass with no further issues.

Sparky likes to play with toads when he finds one in the yard, but he doesn't put them in his mouth. He likes to paw at then to make them hop away. And of course if he finds one dead that has been a victim of the lawn mower - then he will roll all over it, necessitating a bath to get rid of the smell!