Well, I know what a mouse nest smells like- kind of close and musty - so I imagine a mouse tastes kind of like that.

Last week I had a mouse - don't know yet if I had/have more than the one - and my Chinese Crested (Hairless) dog caught and kiltit. He buried it in his blankets. He watched me solemnly while I unearthed it and picked it up for disposal, but he didn't seem emotionally attached to it.