I am very impressed at the good guesses on which boy is which!

Pouncer has a round face, while Mikey's is more angular. Pouncer has always had a swishy tail and Mikey has recently started tail swishing (had no idea one would learn that from another, but ok!)

I can always tell them apart by a side glance but it gets tricky at night. Both boys climb up onto me in the same exact way. Exact down to the same happy feet, and now that Mikey swishes his tail, its hard to tell who's who. Even their hair has a similar texture. The best and simplest way to determine who is who is by rubbing the right ear. Pouncer has a small mole-like bump on the inside of his ear and he likes his ears rubbed. If I feel the bump and the cat sitting on me likes it, I know I have Pouncer.