> On 14 Feb 2018, at 15:23, Karlin High <karlinh...@gmail.com> wrote:
> On 2/14/2018 4:34 AM, David Kastrup wrote:
>> The mice were running around openly and rather visibly before that.
>> Already when the cats were confined to one stable cell, the difference
>> was staggering.  When they roamed freely, it was overwhelming.  They
>> couldn't have caught hundreds of mice in that time frame: it's just that
>> the visibility of the rodents dropped by wagonloads.
> http://www.laweekly.com/news/instead-of-being-put-down-these-feral-cats-are-being-put-to-work-8963106
> <quote>
> Cats are a natural rodent deterrent, even if they're not actively hunting. 
> Mice can smell urinary proteins secreted by cats, snakes and other predators. 
> According to a 2010 study at the Scripps Research Institute, mice don't 
> recognize predators because of experiences with them but because they have 
> evolved to do so. The mere scent of the urinary proteins found in cats 
> triggers a fear response in mice.
> "It's not like they're even going after the rodents," Sathe says of the cats. 
> "They're kind of like a sonic force."
> <end quote>

They don't hunt much if properly fed, just some for sport.

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