I am thinking about adopting an Italian Greyhound from a rescue group. He was rescued from a puppy mill. Anything that I should know about this breed?

Also, the fact that he comes from a puppy mill.

Info given on the dog:

Ruckus is from a puppy mill so he is a bit on the timid side, but once he gets to know you he will give you 100% He will not be adopted to a family with small children as this breed is known to be very fragile…