Vegan and vegetarian diets can work wonders for human well being however assume twice earlier than imposing your dietary preferences in your cat. Protein is a essential element of a balanced feline food regimen and a few varieties of protein are extra useful for cats than others.
On this information, we’ll speak concerning the function protein performs in a feline food regimen and talk about why protein from animal sources is probably the most species-appropriate choice. We’ll additionally provide ideas for studying cat meals labels that can assist you select the very best food regimen in your cat.
Let’s begin with an summary of the dietary necessities of cats.
Protein Is Simply One Piece of the Puzzle
Of the six courses of vitamins—protein, fats, carbohydrates, nutritional vitamins, minerals, and water—the physique makes use of the primary three as power sources. Relying on their anatomy and physiology, totally different species rely extra closely on sure vitamins than others.
Cats, for instance, rely totally on protein and fats—they’ve a really low dietary requirement for carbohydrates.
Within the wild, a cat would get all of the amino acids, fatty acids, nutritional vitamins, and minerals they want by consuming entire prey. A complete-prey feline food regimen consists of muscle meat, organs, and bone in addition to the abdomen contents of the prey, which doubtless comprise small quantities of plant matter.
Some business cat meals mimic a complete prey food regimen extra carefully than others, relying on the elements, however they need to meet sure minimal dietary necessities set by the Affiliation of American Feed Management Officers (AAFCO) to be thought of nutritionally full.
Together with particular ranges of key micronutrients, a whole and balanced business food regimen for grownup cats comprises a minimal of 9% crude fats and 26% crude protein, each measured as dry matter. Cat meals formulated for kittens and pregnant or lactating feminine cats should comprise a minimal of 30% dry matter protein.
Animal Protein vs. Plant Protein
Proteins are made up of chains of amino acids that the physique makes use of to develop and keep wholesome muscle tissues, bones, and pores and skin.
In keeping with Dr. Jo Myers, DVM, a veterinarian at Vetster, “Cats, people, and different animals have totally different protein constructing blocks they’ll manufacture themselves, whereas different protein constructing blocks should come from their diets.”
Cats require 22 totally different amino acids, ten of which they’ll synthesize from different chemical compounds within the physique. The remaining 11, referred to as important amino acids, should come from the cat’s food regimen. All mammals share the necessity for 9 important amino acids however cats require two extra: taurine and arginine.
The important amino acids cats want embrace:
- Taurine
- Arginine
- Histidine
- Isoleucine
- Leucine
- Lysine
- Methionine
- Phenylalanine
- Threonine
- Tryptophan
- Valine
Meals that comprise all of the important amino acids an animal wants are known as a whole protein supply. Many meals comprise amino acids however solely animal proteins—issues like beef, hen, eggs, and fish—are thought of full proteins for cats. Plant proteins don’t comprise taurine or arginine, each of that are essential in your cat’s well being.
If cats don’t get these important amino acids from their food regimen, they may change into poor. The kind and severity of ensuing signs will rely on which amino acids they’re lacking, and by how a lot, however dietary deficiencies can result in extreme illness.
However can plant protein nonetheless be useful for cats? Dr. Raymond Spragley, DVM, CVA, CCRT, says, “Plant protein will be useful by way of fulfilling cats’ total want for protein however can’t fulfill their dietary wants by itself.”
In different phrases, plant proteins can enhance the whole protein content material of a cat meals product. Nevertheless, as Dr. Spragley feedback, for the meals to be thought of nutritionally full, it “should be supplemented with animal protein to supply cats with the amino acids and nutritional vitamins they should survive and thrive.”
Let’s delve additional into this idea with an instance.
The Downside With Plant Protein in Pet Meals
Many pet homeowners don’t look past the product title when purchasing for cat meals. Even the assured evaluation on the label doesn’t at all times inform you the entire story. A food regimen labeled as a high-protein cat meals could also be increased in protein than the typical product however you’d need to delve slightly deeper to search out out the place that protein comes from.
For instance, throughout a latest journey to the pet retailer, I picked up a bag of cat meals from a model I didn’t acknowledge. The product title implied it was a chicken-based system and I used to be impressed by the protein content material listed within the assured evaluation.
Upon looking the checklist of elements, nonetheless, I noticed an issue.
The primary ingredient listed was hen. Nice! Brown rice got here subsequent. So far as carbohydrates in cat meals go, I want brown rice over starchier choices like tapioca or hard-to-digest peas or different legumes. The issue wasn’t the carbohydrates—it was the plant protein concentrates. Pea protein and potato protein made up elements quantity three and 4.
In keeping with Dr. Paola Cuevas, MVZ, a veterinarian and animal behaviorist, “Plant protein concentrates are processed to take away the starchy or carbohydrate parts and extrude the protein parts of crops.” Pet meals producers usually use them to inflate the whole protein content material of the product.
Extra protein in cat meals is an efficient factor. However the good thing about further protein solely goes thus far when plant-based proteins overshadow or act as a alternative for extra biologically useful animal proteins.
What it comes right down to is that this: cats are obligate meat-eaters, so meat-based diets are merely extra acceptable for his or her biology, anatomy, and vitamin than plant-based diets.
Can Cats Survive on a Plant-Based mostly Weight loss plan?

Cats might nibble on grass and catnip—however these are only a garnish on their in any other case carnivorous food regimen. BillionPhotos / Adobe Inventory
By now we’ve established {that a} food regimen wealthy in animal protein is good for cats, however can a cat survive on a plant-based food regimen? Is the vegan food regimen a viable choice for cats? To reply this query, we have to keep in mind that cats are obligate carnivores.
A food regimen for obligate carnivores, feedback Dr. Neus Torrent, DVM, an animal nutritionist for Out of doors Bengal, requires vitamins discovered solely in animal flesh. “Whereas cats may be capable of ingest small quantities of plant matter,” he says, “they lack the mandatory physiology required to completely digest it.”
Dr. Meyers affords a proof that helps conceptualize the organic distinction between herbivores and carnivores.
She describes herbivores as micro organism farmers, explaining that, “The plant supplies they ingest are used to feed giant populations of micro organism of their digestive tracts, which they subsequently digest and obtain vitamins from.”
Each herbivores and omnivores, she notes, have grinding enamel to assist break down vegetation earlier than it enters the digestive tract to streamline this course of. A fast peek into your cat’s mouth will reveal a key attribute that identifies them as a carnivore: their sharp enamel.
A cat’s enamel are meant for tearing meat, not grinding crops. Greater than that, nonetheless, a cat’s digestive tract isn’t designed to course of plant matter.
“The feline digestive tract is small and doesn’t have a number of stomachs, like cows and sheep,” says Dr. Meyers. “In flip, cats can’t farm micro organism… Their intestines aren’t designed to effectively take in plant proteins and different vitamins, leaving most plant vitamins unavailable to them.”
Dr. Cuevas notes that producers of plant-based diets for pets attempt to get round this drawback by including artificial variations of important vitamins like vitamin A and niacin and the amino acids taurine, arginine, and lysine. Even so, she says, “Research have proven that vegan cat diets are poor within the vitamins a cat must thrive when in comparison with the AAFCO minimal requirements.”
To summarize, a cat may be capable of survive on a supplemented plant-based food regimen however it might not thrive. A number of of the veterinarians I consulted commented that long-term feeding of plant-based diets can predispose cats to severe well being issues like diabetes and cardiomyopathy.
Suggestions for Deciphering Cat Meals Labels
If you wish to feed your cat a biologically acceptable food regimen, perform a little research first—the product title doesn’t inform the entire story. As Dr. Myers says, “Studying cat meals labels isn’t as straightforward or easy as you may assume, and it may be troublesome to separate reality from fiction.”
Right here are some things to think about when studying a cat meals label:
- The assured evaluation normally lists vitamins on an “as-fed” foundation, which incorporates the water content material. You could must convert the values to dry matter if you wish to make an correct comparability between merchandise.
- Simply because an animal ingredient seems within the product title doesn’t imply it’s the principle ingredient. Double-check the checklist of elements and keep in mind they’re organized in descending order by weight.
- Pet meals producers usually “break up” plant-based elements to decrease their place on the elements checklist. For instance, a hen and potato cat meals may comprise 18% hen and 30% potato. Nevertheless, by splitting the potato into potato flour, potato starch, and potato protein, the hen will seem on the prime of the checklist.
- Plant proteins aren’t at all times listed within the type of a focus. Components like corn gluten meal, soybean meal, and peas can add considerably to a cat meals’s whole protein composition.
With so many cat meals merchandise on the market, it might appear to be an inconceivable process to kind the nice from the unhealthy. A little analysis goes a good distance, nonetheless, and recalling your cat’s biology as a carnivore will allow you to make a wholesome choice in your cat’s behalf.
Steadily Requested Questions
What’s a extremely digestible protein for cats?
Animal protein is extra extremely digestible than plant protein for cats. Specified animal protein sources like hen or salmon meal are preferable to unspecified proteins like poultry meal or animal by-product meal. Animal by-products will be digestible for cats as effectively, although the dietary composition of such elements might range.
Can cats be vegan?
No. Whereas a plant-based food regimen supplemented with important amino acids and different vitamins may meet a cat’s minimal dietary necessities, cats are unlikely to thrive on plant-based than meat-based diets.
Is it merciless to feed your cat a plant-based food regimen?
Sure, it’s merciless to power an unnatural food regimen on a pet. Dr. Cuevas says, “Every species developed with particular dietary wants and it took nature hundreds of years to excellent them in direction of what they’re now.” Pets can’t management what goes of their bowl, so it’s as much as you to make a accountable choice about their pet’s food regimen.
Will feeding a plant-based food regimen make my cat sick?
Feeding your cat a food regimen that isn’t nutritionally full or troublesome to digest may put your cat in danger for well being issues. For instance, a plant-based food regimen that isn’t supplemented with important amino acids may result in taurine deficiency. Dr. Spragley says, “With out enough taurine, cats can change into blind from retinal degeneration, develop dilated cardiomyopathy, and develop neurologic points.”