Earline,
keep in mind that the fur is different in both my image and James'. In show photography, we talk about dogs that are invisible to the camera -- Newfies, Black Chows, Keeshunds, some Poodles. Basically, they have no reflective surface and so the autofocus really can't see them unless you focus on their outline.
Same goes for shooting your cat on the velvet black background -- the cat basically doesn't reflect light so it's hard to get that sheen regardless of where you set up your lights. Rotties, Black Labs and other breeds are different because their coats reflect the light.
I use two strobes with silver umbrellas, set high, about 30 degrees off of center for my Rottie portraits. That gives me maximum reflectivity even on a black background.
I like your cat shot. The eyes just pop off the image. As you would expect from a black cat

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Jim