biting

by Denise
(Napa, Ca. U.S.A)

My JRT is biting children on the legs, hands, wherever he can when they are playing in water, or sometimes running.

What can I do to stop this. At the beach I had him on the leash in the water and a little girl ran by. He grabbed her leg and cut her with his teeth on both sides. She bled from two scratches. No stitches required. Now he is quarantined. He has bit my kids in the yard the same way, when they were running or in the sprinkles. What can I do?

Sincerely,

Denise