On my cats' latest routine vet visit, I had the contents of Betamax's bladder checked for mischief, as he's been getting less reliable about his litter box usage lately. I needed to rule out a medical issue. To be honest, I suspected it was behavioral, that he was just getting picky or something, because sometimes cats do that.
Nope! Betamax is in fact afflicted with a condition called struvite crystals, which form in the bladder when urine is too alkaline. (Henceforth I will refer to this condition as "piss crystals.") Piss crystals are not usually life-threatening, but they irritate the bladder and can cause cats to have strange urination habits. They are a relatively common medical issue for all cats, but especially neutered males. If left untreated, they sometimes form stones that cause blockages in the urethra, and this can be fatal. Since I do not want my cat to die of piss crystals, I opted to treat the condition with a special prescription cat food from the vet.
Now, I am one of those weirdos who reads the labels on things out of habit, and that includes on pet food. Any vet will tell you that you should feed your pet a food with a real meat as the first ingredient, which is why I was kind of surprised to find that both prescription cat food options (Hills Prescription c/d and Royal Canin Urinary SO) had weird mysterious by-products as first ingredients. The Royal Canin can actually had a lot of the codewords I read as "rendering plant soup," which means a mix of sick or DOA livestock, diseased organ meat, garbage, expired food, and euthanized pets from some veterinarians and animal shelters. If your pet food says "meat by-products," "meat and bone meal" or "animal fat" but gives no indication of the kind of animal it comes from, that means they actually do not know, because it's all cooked together in a big horrible vat at the plant.
Both foods sounded pretty horrible from the labels, but I was leaning toward the Hills c/d just because it was specific about the origin of the meat. The cat got to make the final call, though. Luckily, he prefers the Hills, too. Here's the nasty-sounding ingredient list, for the morbidly curious:
Pork by-products, water, pork liver, chicken, rice, corn starch, oat fiber, chicken fat (preserved with mixed tocopherols and citric acid), fish meal, corn gluten meal, chicken liver flavor, calcium sulfate, guar gum, fish oil, brewers dried yeast, glucose, DL-Methionine, choline chloride, potassium chloride, taurine, cysteine, calcium carbonate, dried egg yolk, glycine, vitamin E supplement, iodized salt, potassium citrate, thiamine mononitrate, zinc oxide, ferrous sulfate, niacin, pyridoxine hydrochloride, beta-carotene, manganous oxide, calcium pantothenate, vitamin B12 supplement, riboflavin, biotin, vitamin D3 supplement, folic acid, calcium iodate.
I had been feeding both cats Castor & Pollux Natural Ultramix Adult Feline dry kibble (boy, that's a mouthful), but Betamax has to eat solely wet food now. That's okay. I've been doing some reading online and finding a general consensus that dry cat food is often a contributing factor to piss crystals, and that many cats recover fine while simply being fed ordinary canned cat food. I guess the reason is because cats have a low thirst drive and tend to form crystals when the urine is more condensed (i.e. they are dehydrated). Eating a wet food just gets more water into them, which helps flush the bladder before bad stuff starts building up. I think Betamax will stay on the prescription food for a while, and perhaps once he's been healthy for a few months, he will get a different canned food, like Wellness, which costs the same but contains much higher-quality ingredients, is available from retail stores, and can be fed to both cats.
To be honest, I should have switched to a wet food sooner. Getting off the high-carb dry food can help fat cats (like Maisy) lose weight without making them feel too hungry. Once the last of the dry food is gone, it's all canned for these two.