Dogs at the Upper Main Line's Francisvale Home for Small Animals are a breed apart from puppy mill pets. They are well cared for in relatively spacious cages. They're given room to romp a little, and lots of loving attention from volunteers and adoptive families. Francisvale staff members say that's in stark contrast to the conditions at puppy mills in Pennsylvania and around the country where dogs are forced to live in crowded, cramped conditions. Francisville Executive Director Jodi Button says breeding dogs in puppy mills are often kept locked up in small cages through litter after litter …