How to hide a GoPro outside?

Is there anything on the market like a hollow rock or something to hide a GoPro outside? I live in a large metro area, but we also have things like deer/antelope/cougars/foxes, etc. I'd love to get some urban wildlife videos, but don't want to scare any of them.

Anything like a game camera would stick out like a sore thumb and someone would surely take it. Is there anything more inconspicuous on the market I could use to hide a GoPro in a city?