Your Cat is Stressed Out
Cats, like humans, can get stressed out. It is not uncommon for changes within the household, lack of attention, or the loss of a fellow pet or human family member to stress your cat out. Cats like everything to have their place. They like order, so if too many things change, or they feel they are not getting the attention they crave, they can get stressed out.
However, even if stress causes them to pee just outside the litter box, they aren’t acting out. More than likely, they are stressed out and overwhelmed. They don’t know what to do, so they try to mark their territory. That way, they can feel like they have some order in their lives.
To close, if you want to find out why your cat is peeing just outside the litter box, you need to rule out all these different issues. Hopefully, it is an easy fix but unfortunately, unless you just start ruling things out, it could be difficult to figure out why your cat is peeing just outside the litter box.