I had a purple one for cats years ago.  When I had to replace it, my local store didn't have it.  They only had pink ones (for dogs.)  At that time, I didn't notice any difference other than the color and the length of "pointy" ends; dog version pink one was fatter/shorter.  I ordered this one just because.  But, I was surprised when I got this one out of packaging.  This one seems much thinner on the top (where you see the kitty) than what I remember.  When I hold it in my hands to brush my cat, it wabbles.  Hard to describe, but the other one gives me much better control.  My cat seems to like the pink one better too.  We will give this one away.
I had a purple one for cats years ago. When I had to replace it, my local store didn't have it. They only had pink ones (for dogs. )  At that time, I didn't notice any difference other than the color and the length of "pointy" ends; dog version pink one was fatter/shorter. I ordered this one just because. But, I was surprised when I got this one out of packaging. This one seems much thinner on the top (where you see the kitty) than what I remember. When I hold it in my hands to brush my cat, it wabbles. Hard to describe, but the other one gives me much better control. My cat seems to like the pink one better too. We will give this one away.