I got two new baby guinea pigs. They are brothers and I have named them Bert & Ernie. I am loving them. This one is Bert and below him is Ernie. They can live up to 8 years, the longest one on record is 14 years old. They can weigh up to 2 and 1/2 pounds. They do learn to recognize you and when they want your attention they whistle for you.