This is probably not a big concern. In SoCal washes are the freeways for wild life. In Orange County that primarily means coyotes, mountain lions, raccoons, possum, skunks, rabbits, rats and deer. In your area maybe also bears. It would be neat to have a web-cam mounted on that tall backyard fence. I guess it would be up to you whether this would be a pro or a con. "Different strokes for different folks."
Happy funding, Rudi