Pity your cats. so kesian.. they are stress..
Yes most cat will show rebel when they are too horny. they start doing things that will make you mad. the worst part i ever heard is, they poop inside the food bowl to show madness.
Another thing is, cat that pee and poo different places, normally associate with sickness. it can be anything inside the body.
most common for female is "Pyometra & Endometrial Hyperplasia"... vaginal infection. One of our forum member here last time, her cat got infected with this, right after spaying. it's like too late. her cat died, and that cat is so cute and adorable.
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sorry dear, in this forum, mating services is not allowed. why don't your neuter all your female cat? making them pregnant won't solve the problem.
let say they are pregnant, first thing you need to make sure -
CAN YOUR CAT GET PREGNANT AND LABOR? not all cat successfully with pregnant and labor. they can get miscarriage which will end up dying. or they can end up having hard time to labor and lastly died together with the kittens.
IF YOU HAVE 3 CATS, EACH CATS GIVE BIRTH TO 4 KITTEN.. THATS MEAN 12 KITTEN. are you sure you can too have this many kitten. having kitten is not an easy job. start from food to litter, everything need to add more money. plan first before you get your cat pregnant. stop breeding unwanted kittens.
If you plan to mate and get them pregnant just because you don't want them to pee different places, forget about it. it won't help. 2 months after pregnant i'm pretty sure they will get horny and on heat again. and start doing that thing again. a female cat can get horny / on heat right after 24 hours after delivery/labor her kitten.
So think and think again.
Do you love your female cats? = get them neuter
or
I'm Having cat just to satisfy myself, produce cute kitten that make me happy, get them pregnant to solve all problem, i don't care much about them, as long as i'm happy not them..? = I think you better give your cat to potential new owner, i'm pretty sure you don't deserve to have a cats if you have this kind of mind.
Good luck

Yes, I definitely agree with Elfreakz on this matter. Its definitely cute when you have kittens but when they grow and populate again then there will be trouble. You face with so many cats and then you would not know what to do with it. You might think its easy getting a cat pregnant and fun having kittens but I tell you its not. Once the female cats gives birth, they will lose their fur and get thin from feeding their babies. So pityful when you look at them. You will need to spend more in giving the lacating mothers the vitamins that they need when they are breast feeding. You will also need to ensure that the kittens are getting enough nutrients too. You may think its fun to breed and get cute kittens but think again when you have a household full of kittens and that is when the problems start.
Also some cats may get complications during birth and if you are not experienced the cat will die. Think carefully before you want to breed your cat. No offence ya...