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How Long Does It Take 2 Cats to Turn Into 80 Million?

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How Long Does It Take 2 Cats to Turn Into 80 Million?

Eighty million cats is a lot of cats. However, you would be surprised how quickly two cats can become that 80 million. If you let two cats breed at will — and then allow their offspring to breed at will, these two cats will have 80 million progeny within a decade! This assumes two litters per year and 2.8 surviving kittens per litter. Here are the numbers:

First year: 12

Second year: 66

Third year: 382

Fourth year: 2,201

Fifth year: 12,680

Sixth year: 73,041

Seventh year: 420,715

Eighth year: 2,423,316

Ninth year: 13,968,290

Tenth Year: 80,399,780

Wow! If only my bank account would multiply like that!

Source: American Humane Association

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Cherise Udell

Cherise Udell is a mom, clean air advocate, anthropologist and feline aficionado with the nomadic habit of taking spontaneous sojourns to unusual destinations. Before her adventures in motherhood, she was an intrepid Amazon jungle guide equipped with a pair of sturdy wellingtons and a 24-inch machete, as well as a volunteer at a rainforest animal rescue center.

111 comments

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10:39AM PDT on Apr 4, 2013

Shared everywhere! This is an extremely important issue. Thank you for the article.... All my cats are spayed/neutered (and adopted also!)

12:30PM PST on Feb 22, 2013

yikes! spay and neuter!

3:20PM PST on Jan 10, 2013

I have all my house critters spayed or neutered. I live on a farm and have barn cats... every year a few new ones show up and a few disappear, the number stays fairly constant..... as long as I take the kittens and find them homes. This is what I have done for years, and with great success; all the kittens that i caught I tamed and found homes for. This must stop! I am not doing the cats of the world any favors! Last year i found homes for 50 barn kittens! I was happy about that, until it dawned on me, my 50 saved kittens, took 50 homes from other kittens or cats. Did they die so these barn kittens could live? I am raising funds to spay and neuter my barn cats (I am on a disability income) now, and I hope to have it all done (fingers crossed) before the spring kitten season. Some are pregnant now, unfortuantly but I will endevor to find homes that agree to spaying/neutering. If everyone would do what ever they can... we will lower the euthanasia numbers and save cat lives!

4:10AM PST on Dec 29, 2012

All of my babies have been desexed. I wish everyone would be so responsible as some pet owners just don't get it!!!

10:30AM PST on Dec 18, 2012

Thank you for reminding people to sterilize their pets.
Both cats and dogs can reproduce very quickly, filling the shelters with unwanted animals, lots of which will die or never be adopted.
Always adopt & sterilize.

7:25AM PST on Dec 18, 2012

Amen!

6:05AM PST on Dec 10, 2012

thanks for sharing :)

7:15PM PST on Dec 9, 2012

please repost and spread the word!

3:49PM PST on Dec 2, 2012

WOW! Really, WOW! Spaying and neutering seems to be the answer.

8:00AM PST on Dec 2, 2012

So in 20 years you get about 650 trillion, right? Same thing happens in nature, right? But then there's the factor of food supply, predators, and disease. Our barn cats, which we can't catch, seem to maintain a fairly steady population.

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