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Is it Safe to Give Cats Milk?

You’re probably already aware that some common household foods are toxic to our furry friends, but many pet parents are surprised to learn that milk can do cats more harm than good. For the vast majority of kitties, milk is difficult to digest and can lead to intestinal upset and potentially serious complications.

orange cat drinking milk from a saucerWhat is feline lactose intolerance?

Lactose intolerance in cats looks a lot like it does in us. Just like human babies, kittens are born relying on milk as their source of nourishment. When our fur babies are small, they naturally produce an abundance of an enzyme called lactase, which allows them to break down the sugars in their mothers’ milk. Shortly after kittens are weaned, their digestive systems begin to slow the production of lactase. For most adult cats, this enzyme disappears altogether.

When a cat (or a human for that matter) doesn’t produce sufficient lactase and snacks on dairy products, the naturally occurring milk sugars pass through their system undigested, leaching water from their intestinal tract and causing potentially painful inflammation.

What are the symptoms of lactose intolerance in cats?

If you are part of the 65% of the human population who is at least somewhat lactose intolerant, you’ll have no trouble imagining the discomfort that a saucer of milk can cause your furry friend. If your kitty sneaks a drink of your cereal milk, symptoms may appear over the next 8-12 hours. Keep an eye out for:

  •       Diarrhea
  •       Bloating
  •       Vomiting
  •       General discomfort
  •       Gas
  •       Dehydration

Keep in mind that cats are often guarded about showing their discomfort, so you might not be able to tell for sure if there is minor upset. For all these reasons, we find it best to avoid giving cats a saucer of milk — to stay on the safe side.

Safe treats for cats who love milk

Just like the lactose intolerant among us choose to endure bloating and discomfort to enjoy the occasional dairy product, digestive woes won’t stop your cat from craving milk. You may be tempted to skirt digestive issues by offering your cat almond or soy milk, but plant milk alternatives contain thickeners, stabilizers, and excess sugars that aren’t good for cats. Fortunately, there are some “creamy” foods and treats on the market made especially for kitties, that allow your cat to enjoy the occasional treat safely and comfortably. Stick with these.

The bottom line

For your cat, the most serious risk of unaddressed lactose intolerance is dehydration brought on by vomiting and diarrhea. Cats are notoriously poor drinkers, and conditions that cause excessive fluid loss can pose serious risks to your fur baby’s health. If you are concerned that your kitty may be experiencing GI upset or dehydration, don’t hesitate to contact us. We’re here to answer your questions and keep your best friend in the best of health.