several reasons for ex.; it's a territorial thing
iLogic101 says: Usually a cat will do this to communicate their disapproval with something. A cat may do this when being left home alone for too long of a time. The cat may require attention that he or she is not getting. If a cat's litter box is placed too close to their feeding dish, they will not go to the bathroom there. They will not relieve themselves too close to their eating place and will therefore find another place, which is usually a place where their owner does not want them to go; like on the furniture. Also the cat, which is a very clean animal, will stop using the litter box if it is not cleaned regularly or frequently enough. Keep their litter box clean and they will make it their first choice. Keep it far away from their eating place. Remember to reward the desired behavior, i.e. the urinating in the right place, and avoid scolding or hitting the cat for the undesired behavior. Show the cat unconditional love. Additionally, urinary tract infections are very popular in male cats. You may want to get him checked. It may be out of his control. He may want to urinate, but it hurts so much that he holds it until he can no longer and then lets it go regardless of where he is. I hope this is helpful.
cats urinate on sofa chairs because they feel threatened when they have another animal or baby/young child on that chair when its not their territory but if it is their territory they feel they can control it or have power over it
Cats usually do not go to the bathroom in places other than their litter box. If the litter box is full or in a place hidden, you must make sure they know where it is! Some outdoor cats go to the bathroom outdoors, so no worry there. When cats go to the bathroom in places other than the litter box or outdoors, it is not their fault, trust me. Make sure they are trained (Kittens sometimes need a little training), and make sure you show the cat where the litter box is in order to find it!
because it likes to see your reaction when you sit on it
A sofa is also for sitting but it is typically larger and can seat multiple people compared to a chair.
between the chair and the sofa
sofa is to lie down I think!...
On a hard chair
a chair, a sofa, bottom, and bench.
cushion
A chair? Or a sofa?
in a litter box?
Sofa
Seat, (depending on type) couch, sofa, stool.
Cats normally bury their urine and feces. For this reason, they will urinate in litter. Providing a litter box is a great substitution.
A chair is typically designed for seating one person, often with a backrest and armrests, whereas a sofa is larger and usually designed for seating multiple people. Sofas often have a longer seat depth and can accommodate more people comfortably compared to a chair.