One of our n/male house cats liked to pee on our daughter's bed. Our sp/female dog used to destroy anthing she could with her teeth until we figured out why.
Ruined furniture and woodwork and household decorations. That is why there is education available on how to bun-proof and the personality traits of our pets.
Marking, and expressing their natural instincts and/pr personalities as to what our pets and animals want.
One house bun was jealous of his significant other sleeping in the bed with him. Hence, house boy would mark on her pillow, not his.