Why are all Domesticated cats basically the same size?

[Genduko]

as compared to domesticated dogs where you can get small dogs like a jack Russel and then you can get bigger ones like a labrador where as all domesticated cats are usually the same size.

Pretty much im asking why cant domesticated cats get as big as domesticated dogs

 

[lol99]

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that doesn't look small to me

 

[-Jiraiya-]

Not a fact..

 

[ShishaMastah420]

This is why ----------------->

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