A neighborhood cat attacked one of the squirrels in our yard. I was able to scare the cat off and rescue the squirrel.
The poor little thing is alive, but can't really move its legs. The only visible injury from a cursory look is a scratch on the ear, but we assume there is some leg damage at a minimum. The squirrel is still eating (It ate a bit a walnut we gave him/her).
I'm based in New Rochelle (Westchester County, NY).
Thanks for your help!