Adopted this "golden retriever great pyrenees mix" a year ago when he was 3 months. His name is Ramses and he has been a blessing. Such a dumb sweetheart and so mild tempered. I wanna do my best with him so i figured I'd reach out and see what pyrenees owners had to say. Couple questions:

1. I have a 4year old catahoula named Atlas that's has high anxiety, they do great together and bonded quick and fast. Ramses seems to be developing separation anxiety if atlas isn't around and I was curious how you might prevent or lessen that?

2. I don't think he is a retriever mix but instead more of a type of shepherd? Any general things I should look out for with the pyrenees side of things?

3. My oh my how do you handle the hair???? I've got 2 cats and now 2 dogs and before ramses sure there was hair but I could vacuum 1x a week and it wasn't that bad. Now he comes along and I've got all the hairs mixing to form tumbleweeds everywhere!! I started brushing him every day or every other day and not much comes off with a slicker brush. Before that I would use a deshedding brush and get massive tufts off. He gets groomed maybe 1/mo or every other month. But to save you from the rant, I vacuum the floors and couch every other day and brush almost everyday and I still feel like I'm buried under hair. The floors aren't that bad to clean but the blankets, pillows and couch just grab it all like crazy and are way harder to clean! I had a couch cover but my dogs roughhouse and race around they knock it off or one of they pulls it off! 

TLDR: 
1. How do I make sure I'm helping my pup stay cool calm and collected like he came to us?
2. Any general advice or quirks to be mindful of with a pyrenees mix?
3. How do you keep your your dogs hair under control?

Thanks a bunch!!!

Mixed bag of questions