i woof and whimper during nightmares.. i have woken myself up, so i knowSet up a video cam and record yourself when YOU sleep. You'll find that your paws move and that you woof and whimper as well...
2. I would guess that most mammals dream. [I even think my parakeets dreamt.]
Although I'm sure parakeets dream, they are birds and have no tits, therefore are not "mammals"...