We just bought our first labradoodle through a breeder here in town. He's(George) 1st generation; dad's a black standard poodle and mom's a yellow lab. George, now 4 1/2 mths old is shedding excessively..there are some places on his body that you could almost see through to the skin. The vet couldn't find a problem...said he might be shedding his "puppy hair". He's got some real wirey hair and some curly.He also is what the vet calls a submissive urinater. If someone new comes around, if he gets scared, excited, happy, sad, etc he pees. He urinated five times in the vet's office. Is this typical of the breed? Any suggestions on how we can work with him?