We have periodic problems with squirrels invading our attic, being close to lots of trees.
When we first moved in three squirrels invaded and we got a pest control lot in who set big traps. Hearing those go off in the night, followed by a lot of protracted banging and shrieking :-(, was memorable.
Not wishing to repeat the experience, when the last squirrel tried to move in I thought I’d scare him off myself. So I went up there complete with a wrecking bar, Half-Life-style. Damn thing was totally unfazed, and faced me down. Eventually after a lot of fruity language and bold feints with my wrecking bar the squirrel beat a retreat. I then heard it starting a fight with a pair of wood pigeons on the roof.
So yes, bastards. Double-hard bastards!