A bobcat is the size of a beagle. A puma is the size of a grown man.
Adam Rifkin stashed this in Factoids
There is a serious red eye problem there.
They need a better camera!
Yep, the one, which shoots lasers into the eyes of the wild animals:)
Mountain lion vs. bobcat size comparison:
A male puma can weigh over 90Kg, a big male bobcat up to 13Kg.
So most people who think they're seeing pumas are actually seeing bobcats.
I saw a mountain lion in the parking lot of a BBQ joint in Sonoma one night from about a hundred yards away. At first I thought it was a golden retriever, but then realized that no dog has a tail that long...
The length of the tail is a giveaway. I'm glad it didn't attack you!