DAYTONA BEACH, Fla. -

The second you meet Seal you know how he got his name. He is forced to hop like a seal because he can't move his back legs.

The 5-month-old puppy was brought in to the Daytona Beach Halifax Humane Society in May. Seal could barely walk and was found crawling along the streets alone.

Veterinarians call him a medical mystery.

"We haven't been able to determine what it is that's caused this. Unfortunately it doesn't look like she will be able to bend her knees ever," Miguel Abi-Hassan, the executive director at the Humane Society said Wednesday.

Seal has feeling in his back legs, but can't use them and doctors can't find any broken bones. It may be just the way he was brought into the world, but it's clear his disability is not holding him back.

Chad Bessire fostered Seal and has now permanently made him part of his family.

[PICS: Seal the dog ]

Though Seal is pretty independent now, he just got a new set of wheels to help him get around faster. "Instead of him going in the grass in our yard only. He's seeing new things now," Bessire said.

Seal is like a local celebrity at the humane society, bonding with employees and amazing everyone who walks through the door.

"He has no clue he is different. He runs as fast as his brother who has all his legs," Bessire said.

Seal may not know how different he is, or how he's impacting so many lives.

"He's the greatest thing in the world. He's a big part of my life. I love him," Bessire said.

Seal's new cart was donated by a man in Texas who makes handicap equipment for animals at his home.

Seal has a new owner, but there are about a dozen animals with special needs that need to be fostered. If you're interested in becoming a foster parent call the Daytona Beach Halifax Humane Society at (386) 274-4703.