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>> “The danger of too many cats are the potential diseases they can spread.” <<
I bet you believe in Global Warming too!
The only disease I know of that is spread by cats is toxoplasmosis, and it is rare.
The main reason that we have so many cats is that they are epidemiologically benign.
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>> “The danger of too many cats are the potential diseases they can spread.” <<
Feline Leukemia went around our neighborhood a few years ago. It started with feral cats and infected the domesticated ones.