This happened about 10 hours ago. We got our pup, Ranger, a couple weeks ago. He is a black lab. He has been awesome, if a lot of work.
The cat isn't a big fan, and does sometimes hiss at him and tries to stay as far away as possible, but I'm sure they'll work it out eventually.
Anyways, he usually needs to potty at 1 am and then again at about 5 am. So I have been pretty sleep deprived lately.
After taking him out at 1 am, I got back in bed and fell asleep. I wake up at 3, super groggy, not sure what's going on.
I guess I had left the crate door open and Ranger had somehow wriggled up on the bed to snuggle with me. As he's not totally potty trained, I had to get him back in his crate.
I pick him up, open the crate and try to put him back in. He starts to protest, but the middle of the night is no time for whining about the crate so I just shove him in there.
At that point he has fully waken up. He hisses at me and frantically starts clawing everything in sight, including my arms, then shoots out of the bedroom at mock speed.
Still pretty foggy and confused myself, I click on the light.
There's Ranger, sleeping at the back of the crate.
Outside the bedroom, there's Kit Kat,
indignantly wondering why I woke him up in the middle of the night from a peaceful sleep and decided right then and there was a good time to lock him in 4'x2' crate with his mortal enemy.
The light also revealed long, deep scratches up and down my arms, bleeding all over the place.
This pic accurately describes the first couple weeks: https://imgur.com/gallery/km4Gw
TL;DR. Puppy somehow got out of crate to snuggle at night.
Groggy, I woke up and shoved him back in there, only to find I was attempting to lock the cat in with the new demon we had brought home.
Cat didn't appreciate that and I have some bad scratches to prove it.