Jumping

Question
My friend suggested this web site and you answered a question about the bald patches behind their earsso I was woundering if you could answer mine too?
Ive had my Guines pig for about 3 months, when I let him out of his cage for run around he starts to jump, its like one of those rodeo bulls trying to get something of its back, what does it mean

Answer
It means he's very happy! This erratic, jumping, squeaking behaviour is known as "popping corn", or "popcorning" as I prefer to say, as the guinea pig looks just like a piece of popping corn in the pan!

Your piggy obviously enjoys coming out of his cage to play :o)