There are no dangerous animals in San Luis State Park. There are a lot of jackrabbits, cottontails, coyotes (we only hear them), nighthawks (they only sound scary), chipmunks, and mice (way too many mice) are regulars. We occasionally see bull snakes in the park and always see hawks along the highway when we go to town.
Many years ago rich people built cabins all around the lake (the lake that has been dried up the past two years) but all of them are gone now except this one back in the wetlands that aren't all that wet any more. Quite a few birds once nested in the wetlands/wildlife area so that section of the park is closed off to the public until mid July. A herd of elk live back there, too.