When my cat was pregnant i didn't realize she was, but when she was about to give birth she started making strange noises and her eyes stayed open without blinking! so those were the signs!
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the cat stops having litters when the cat stops getting pregnant by a male cat
Usually a pregnant cat will go into hiding, or into a queening box you have prepared for her. She will lay down and pant and her belly will become hard with contractions. Also, you can check her female parts and if they are wet or leaking fluid then likely labor has begun.
she gets a fat belly.
if it looks fatter
Cats are notorius for having false pregnacies.
Pregnant. A female cat is called a Queen and a male cat is a Tom. When the Cat is having her kittens, it is called Queening.
A cat can become pregnant again as soon as a few days after giving birth to kittens. It is recommended to spay the cat to prevent this from happening.
Cats do not experience Braxton Hicks contractions in the same way that humans do. However, they can have practice contractions as they approach their due date, which may be similar but are typically less noticeable. These contractions help prepare the body for actual labor. If you observe any unusual behavior or signs in a pregnant cat, it's best to consult a veterinarian.
57-70 days supposedly my cat had hers within a month in a half its hard to tell...feel her belly if u feel kittens r moving around in her belly they are coming soon so keep and eye out and keep her indoors.
If the cat was recently pregnant you can look at the uterine horns for signs of involution (longitudinal stria on the outside of the uterus, signs of tisue sloughing on the uterine lining). However, if you have an older cat it will be difficult to tell if the cat had been pregnant at one point or has just gone through multiple heat cycles as both increase the size of the uterine arteries and the uterus itself.
You can tell if a cat is pregnant by looking for some of the following signs; overly affectionate, enlarged nipples, morning sickness, a slightly round and bulging belly and show nesting behaviors. The only way to know for sure would be taking the cat to the vet.
Consult a vet is all I can tell you, sorry.