Joe Jonas wants a dog for his birthday.

The Jonas Brothers singer turns 21 tomorrow (15.08.10) and admits he is unsure what he will do to celebrate reaching the landmark age.

When asked his birthday plans, he said: "Besides a dog, I don't know. That's all I kind of wanted. I don't know what we're going to do to celebrate. These guys are not telling me what they're doing."

Jonas Brothers are currently touring with the cast of 'Camp Rock 2' and are having a great time.

Joe added: "It's going really well. We're having a great time."

The brothers and Demi have also been discussing what superpowers they would love to have.

Demi said: "My ideal superpower? I wish I could teleport, just snap my fingers and be in a room."

Nick Jonas added: "I think flying would be good."

Joe has recently been romantically linked to 'Twilight' actress Ashley Greene after the pair were spotted on a string of dates together.