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Cats have a protracted historical past with people, going again greater than 9,000 years. Interested in human settlements by the rodents that plagued (typically actually) our ancestors, cats ingratiated themselves as helpful mousers and slowly domesticated themselves.
Farmers started to make use of them as pest controllers. It was by this association that cats and milk first grew to become acquainted.
Earlier than the commercialisation of pet meals, cats have been principally fed scraps from the household desk. Not a lot was identified about their dietary wants. In his 1877 e book on cats, Scottish physician Gordon Stables insisted cats want two bowls – “one for water and the opposite for milk” – and steered porridge and milk as a superb feline breakfast.
From these origins, cats and milk grew to become additional embedded within the collective zeitgeist by depictions of milk-loving cats in artwork, books, motion pictures and cartoons. There’s even the traditional trope of the scruffy road cat being rescued from the rain to get pleasure from a saucer of milk from a kindly stranger.
Whereas it’s not shocking that cats and milk have endured as an unquestioned mixture, analysis now tells us cats shouldn’t be ingesting milk in any respect.
The overwhelming majority of cats are lactose illiberal
Like all mammals, cats start life ingesting milk from their mom. However previous kittenhood, milk is a very pointless a part of a cat’s weight-reduction plan.
After weaning (round 6–12 weeks of age), kittens cease producing the enzyme lactase, required to digest lactose in milk. For the overwhelming majority of cats, this implies they’re lactose illiberal.
Nevertheless, similar to in people, the extent of intolerance varies for every particular person primarily based on how a lot of the enzyme their physique naturally produces.
Don’t rush to provide your kitten milk, although. Simply because kittens can digest lactose doesn’t imply they need to be ingesting cow’s milk. Cats are a lot smaller animals than cows and, fittingly, the quantity of lactose within the milk of mom cats is way decrease than in cow’s milk. It’s finest to allow them to drink from their mom or to get them a kitten-appropriate cat formulation.
Lactose intolerance isn’t the one motive to not give your cats milk. Although uncommon, cats also can develop an allergy to take advantage of or dairy.
What occurs to cats who drink milk?
Lactose is a kind of sugar. When it might probably’t be damaged all the way down to be absorbed into the bloodstream, lactose travels by the intestines to the colon the place the micro organism contained in the physique ferment it.
This fermentation breaks lactose down into acids and gases which trigger disagreeable signs, together with the passing of extreme fuel, bloating, constipation, belly ache and sometimes nausea and vomiting. In cats, the most typical symptom noticed is diarrhoea.
Persistent or persistent diarrhoea could cause additional issues similar to dehydration, electrolyte imbalance and malnutrition. In some instances, it might probably even be life threatening.
Cats who devour milk or dairy recurrently as a part of their weight-reduction plan are at elevated threat of those well being issues.
If milk is so dangerous for cats, why do they find it irresistible?
We frequently like issues which can be dangerous for us. However to reply this query, we first have to recollect cow’s milk is meant for feeding and rising a child cow.
To attain this feat, it accommodates an assortment of proteins and fat which can be extremely palatable, particularly to cats. Cats want excessive ranges of protein and fats for optimum well being and day by day functioning.
Cow’s milk, particularly, can also be excessive in casein, a protein that’s damaged down by the physique into alpha-casozepine. In some research, it’s been related to a chilled impact in cats. Whereas this wouldn’t initially make a cat wish to drink milk, it might create a comforting affiliation with milk over time.

Can I give milk typically as a deal with? What about milk options?
The brief reply is: no.
Dairy is just not a pure a part of cats’ weight-reduction plan. Whereas they could just like the style, milk is prone to trigger your furry good friend discomfort and well being points, so it’s finest to keep away from totally.
And in the event you’re pondering your cat is without doubt one of the fortunate few that isn’t lactose illiberal, assume once more. Cats are superb at hiding discomfort as a result of, within the wild, displaying weak point would make them a goal for predators.
If you happen to completely should, go for lactose-free milk or milk formulated particularly for cats, and maintain it as a really occasional deal with.
Julia Henning is a PhD Candidate in Feline Behaviour, College of Animal and Veterinary Science, College of Adelaide. This text was first revealed by The Dialog and is republished below a Artistic Commons licence. Learn the unique article .
Whereas it gained’t upset their stomachs in the identical approach as common cow’s milk, it nonetheless gained’t supply your cat any dietary profit.
As for milk options like oat, soy or almond milk? Any uncommon additions to your cat’s weight-reduction plan are prone to trigger digestive upset, so it’s finest to keep away from these as effectively.
The underside line? Don’t give your cat milk. They don’t want it, they most likely can’t digest it and it’s prone to trigger extra ache than it’s value.
