Common toads are not poisonous and will not harm a pup. I have had a few incidents with my pups....they will foam at the mouth if they bite or lick a toad but it does not kill them. ....
With one exception: The bufo toad! It is toxic and only in certain states...I know that Florida and Hawaii have them. Here are some links:
Bufo Toad Poisoning Protect your dog from poisonous cane toads | The Honolulu Advertiser | Hawaii's Newspaper