I have 2 cats, who are no trouble at all. They purr when you go near them, sit on your lap, and bury their own doo doo.
I also have a 15 year old Golden Retreiver who smells like the very bowels of hell, dumps and barfs on the carpet, which used to be white, and makes large dead patches on my lawn.
As for birds, I’d really like to know why, when I’ve just polished my car to a high lustre, do they invariably do a bombing run right up the middle of the bonnet, and all over the windscreen. Maybe they’re not so daft…….