Oh, Bad, Bad Dog

It's been so hot, i got Rosco a little kiddie pool to cool off in. He won't get near it. The pool is really scary. But he likes the lake, and the river...i don't understand.
I left him alone for an hour to get used to the idea of it, and came back outside to see this destruction in my garden. He dug up the cilantro and sat on the mint.He's in big trouble.