Dora the Explorer is 8 years old on August 15th 2010. She has been on television for 10 years now.
They are twins!
His name is Diego. Yes, he is the cousin of Dora. In one of the episodes Dora says "We'll be going on an adventure with my cousin, Diego."
Dora's around age 11-12 she's in the 6th grade supposedly
a popular character on children's tv- young children eg up to 6yrs seem to enjoy watching her and buy mechandise featuring her on bags ,pens etc.