When John and I were walking in the woods, his dog Spu (short for Spumante) came along with us. We walked maybe 3 or 4 miles; she probably ran 15. When we got back, she slept--hard. I think dogs, like little children, have a direct tap to the energy source or the Universe----until it runs out, and then they crash.
Pets and captive animals
Big_Beavis, taggart, gwynn56 and 26 more