Scientist Dr Danielle Gunn-Moore said cats can sometimes be upset by their feline friends.
"If a cat is living with another cat where there is a conflict, this caused long-term stress which was a significant factor in the development of bladder disease."
Wet food and water
University researchers suggest cats with bladder illness can feel better if they're fed wet food and encouraged to drink lots of liquids.
Adding tuna-flavoured ice cubes to water could also help tickle their taste buds.