I thought the same thing too. But, I hunted with some buddies a couple years ago on Hog Island in the Spillway and killed one just like that and when I asked the same question, one of the older guys there told me that.
Gotta admit, squirrel hunting in the Spillway is incredible! Plenty squirrels and more fox and black squirrels than cat squirels.
Hate to bust ya'lls bubble, but cat squirrel and Gray Squirrel are the same thing. Differences in opinion have led to certain gray squirrels being called 'cat squirrels', because of their size or what ever other reason, but there is no such species. The fox squirrel and gray squirrel are the only tree squirrels that occur in Louisiana. The only other species that occurs here is the southern flying squirrel. The squirrel in this picture is more than likely a hybrid between a gray and fox squirrel.
There is no such thing as a cat squirrel. That just a term that some coon@ss came up with just like there's no such thing as a dogris...it's a Scaup. There are only Gray squirrels and Fox squirrels in Louisiana. A fox squirrel can give birth to a normal fox squirrel, a black squirrel and a Bachman's (blaze face) all in the same litter because they are all the same species. Just like there are black, yellow and chocolate labs. Gray squirrels can also be black.
I'm going to throw another wrench in the gears. There are in fact subspecies of fox squirrels in LA. There is the Delta Fox which many are familiar with that are red and have a black phase. These can in fact come from the same litter. The Bachman's fox is a completely different squirrel. They have the white face and white tips on their feet and tail. They can have a black phase that keeps the white tips but are pretty rare. Then there's the one you killed. We've always called them a red squirrel. They get bigger than grey squirrels but not as large as the Delta Fox and nowhere near as big as the Bachman's or Bach, sometimes called Box, squirrel. It is not a crossbreed, they are a different squirrel. City park has had them for as long as I can remember if you know where to look.
I stand semi-corrected. While my last post was obviously not totally incorrect, there are subspecies that I failed to think of, much less mention. I'm not a squirrelologist by any means. But I still stand by everything I said in my last post--no such thing as a cat squirrel (simply a gray squirrel by a different name)-- except that it is a hybrid, because clearly, it may not be.
Although I must disagree with the statement that the 2 species do not interbreed. There is no way possible to prove that, and I'm sure in some places it is very possible that they do interbreed.
Top is a cat squirrel, bottom is a true gray squirrel.