[oldtimer]

Cats will be an endangered species also.

[American Constitutionalist]

If and when that happens, not only cats, but the rat and mice population would be greatly diminished.
People may laugh at this but this is the reality of what could happen.
Just think in a economic collapse, no food stores will be restocked, no gas pumps working, no fuel being delivered to gas stations, no banks would be open, the factories would either be closed or on limited production run shifts if at all and everyone would have to fend for themselves.