'That's my baby': Adorable momma cat adopts a tiny puppy, treating him like he's one of her own, and a twitter user explains exactly why that happened

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    Science girl ✪ @sciencegirl This little pup adopted by a mama cat
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    Anish Moonka @anishmoonka Went down the rabbit hole on this. Cats are hardwired to k I small, squeaking things. Their own newborn kittens are small, squeaking things. The only reason a mother cat doesn't eat her babies is a hormone that shuts off her hunting brain the moment she gives birth.
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    That hormone is called prolactin. It's the same one that triggers milk production. But it also cranks up her protective aggression and dials down her urge to hunt at the same time. The more prolactin in her system, the harder she'll fight for her nest. And the less likely she is to see anything small and warm near that nest as food.
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    This is the entire reason cats adopt puppies.
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    When a nursing cat finds a puppy or a baby rat or a chick near her nest, the animal is small, warm, and isn't trying to escape. Her hunting instinct doesn't fire because prolactin has it suppressed. So her brain goes to the only option left: that's my baby.
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    In Jordan, a cat named Nimra raised seven chicks alongside her four kittens. In Brazil, a mother cat found abandoned newborn puppies and nursed them with her own litter. Animal shelters actually exploit this. At the Animal Care Centers of New York, staff place orphaned kittens with nursing moms who start feeding them on the spot.
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    Researchers tracked over 200 stray cats across 72 nesting spots on Ainoshima Island in Japan. Every single pair of mothers that could have nursed each other's kittens did. All of them. 8 out of 9 pairs shared the same nest. Cats who weren't nursing brought food to the ones who were. Kittens in these group nests grew up about 10 days faster than kittens raised by a single mom.
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    Stray cat colonies are run entirely by mothers and daughters. They nurse each other's kittens, groom them, guard them, and never bother figuring out whose is whose. Even spayed cats who've never given birth can start producing milk if a kitten latches on, because the hormone drop from surgery mimics the hormone drop after giving birth.
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    A 2025 study found that when you gently pet a cat, a bonding hormone called oxytocin spikes in your brain and the cat's brain at the same time. But only if the cat came to you first. Grab the cat, and the hormone drops.
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    Darek Gusto @darekgusto I'm so happy this didn't divert into cuckoo bird territory. Looks absurdly cute! I didn't know stray cat colonies work like that, but this makes sense. Does it happen among larger wild cat species too? • 2:27 AM · Mar 31, 2026 50.5K Views .
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    Anish Moonka @anishmoonka lions do it too. pride females sync their births and nurse each other's cubs on rotation. cubs just latch onto whoever's around. saw a glimpse in Lion King a lioness in india's gir national park adopted a baby leopard for six weeks in 2018. nursed it, fed it from her kills, let it play with her own cubs. conversely, lions and leopards normally kill each other on sight. 2:30 AM Mar 31, 2026 43.3K Views
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    Yoshitaka Ichinomiya (Maora) ✪ @maora234 Dr. Meows agrees and fully supports this statement. • 4:23 AM · Mar 31, 2026 58K Views
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    Anish Moonka ❤ @anishmoonka Thank you Dr Meows, so cute XD 4:24 AM · Mar 31, 2026 45.8K Views

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