I have a 6 year old orange tabby named Olliver and he has always been a little "special". Well, last year we had to take him to the vet because he got constipated and had to have an enema. A month after that, I ordered an enema to administer to him since it happened again. The vet recommend food that has the highest fiber content possible and a little wet food. I'm out of ideas at this point because even the highest fiber food has him backed up. Last week he passed a poop that was abnormally large (like the size of a plum). I have read about "megacolon" and worry that he is starting to develop symptoms of that. I have had him on wet food all week with a mix of a new dry food that we found and he seems to be doing ok. He refuses to eat the probiotic treats I got him (my other cats LOVE them) and I don't necessarily want him to spend his entire life on laxatives. He seems pretty regular now, but I want to prevent this from happening again. What tricks have worked for you in the past?