Hello. My kitten has two white spots on the opening if her bum which keep pussing. She also is doing poo the colour and texture of tar. Which smells real bad. It's only been happening a few days. I thought it may have been down to her having a change in cat biscuits. I've grew up with cats and have never seen this before. :( I'm starting to get really scared now as i have a cat of a year old and thinking if it's some form of infection she may have passed it on..