Got the boot from Daycare...

So, I have an almost-2-year-old Boston Terrier. He's incredibly high energy and very playful with other dogs. At times he has higher energy than the dog he's playing with. Well, for his first year and a half he went to a daycare and they loved him and said he was great. For the last 5 months I was at home during the day, so he wasn't going to daycare during that time, Well, we started taking him back to a different day care about 3 weeks ago. The first week went fine, she said he made a buddy. Then last week we picked him up and the owner told us he had bitten a dog and if it happened again he couldn't come back.