How do you know when a female cat is pregnant?

Answers:
I found it very difficult to know until she was is the later stages of pregnancy. But here are a few signs to look out for:

*Reddening nipples- also known as 'pinking up'. but this doesn't occur till about the third week of pregnancy.
*Weight gain
*Swollen abdomen- don't poke as this may cause damage
*May start to act maternal- finding a place to nest, collecting socks(weird I know, but have heard it can happen)
Hope this helps
Good luck and I hope everything goes smoothly for you and your cat

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Pot belly normally! :)

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starts toget chubby and also u can get a vet to look at it hope i helped chelliie

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i herd female cats get grumpy when it comes to sex lol

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when the kitten comes out XD

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When it quits "yowling", then all the sudden has swollen nipples and a belly going!!!

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i think its when the cats belly gets bigger than it normally is

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It gets fatter than usual. Lol. GL!

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same way you know when a woman is preggers, shes fat, moody, eats allot, pees 10 times a minute, really demanding, lazy, couldnt be bothered to do the cooking or cleaning like a good little slave, oh, im sorry, was that offensive to all women, ooopppsss!!!

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We noticed our cat was pregnant because after about 3 weeks her nipples became very pink and enlarged and she started putting on weight. although she was very love-able

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How do you know when a MALE cat is pregnant?