We always take our two dogs with us. A 100lb german and a 90lb lab. Take a lot of car space up, but love to come.
We have an indoor outdoor carpet that goes into the tent to protect the floor. a found a thermarest type dog bed at costco a while ago. Its awesome, only a couple inches thick so saves room.
One thing is mine like to escape from the tent, Which is fine when no one is around but in a campgound can be problematic. they learned they could use their noses to open the zipper, I have to run the zipper up to the top corner now so they cant get at it. Or use a piece of para cord to tie them together.
Happy campers!