Coyotes; rabbits; skunks; raccoons; possums.  Yes, they are absolutely out there and skulking around.
One time I was in desert, Anza Borrego, near San Diego, maybe late Spring.  I sat in my campchair, enjoying the stars.  Suddenly, I started to see movement on the ground!  Lots!  Turns out, it was Kangaroo Rats, doing their job of cleaning up campground.  I mean....there were at least 100 of them.  They are fast little critters.  I sat there....not moving a muscle....watching it all via Moonlight.  So...mice, rats, snakes, coyotes.....Nature does a marvelous thing....and in a very organized fashion.  A few months later, I was camped at Mammoth, on Eastern Sierra.  At 2 AM, loud banging on passenger door; I had forgotten to remove my trash bag hanging from outside mirror. I tell you....there is nothing like seeing a big bear's head, only 14" away, only protected by a piece of glass!  Major Adrenalin rush!