If you have a “multi-Sphynx cat home” especially if you have acquired a “newer” or “older” sphynx kitty and find that suddenly one of your companions is peeing outside the litter box you will probably stand scratching your head and wondering to your self “hmmm, he or she did not do this before, why now?”
Well, first things first, you need to see your vet and rule out a medical problem like a UTI (urinary tract infection) once it is confirmed that your sphynx kitty is healthy you need to find if the problem may be the Alpha cat issue.
First off, you should have the same number of boxes as you have Sphynx cats. It’s also very important to strategically place the litter boxes throughout the house and not have them all lined up in one room or area.
A lower-ranking sphynxcat may not feel comfortable crossing the path of an Alpha Sphynx cat. This could result in the lower-ranking cat holding his or her urine for a long period time thus causing him or her to urinate outside of the box in an area where he or she feels safer.
Some Alpha sphynx cats can intimidate lower-ranking cats by displaying an almost guarding like behavior in the litter box area, so by using this information you may stop or deter either the alpha or lower-rank sphynx cat from “peeing outside of the box” behavior which can be smelly and messy!
The Sphynx Cat 