In three weeks I will be the proud owner of an 8 week old great pyr FEMALE puppy (unless the breeder considers it is too soon). I alrealy own an English ****er Spaniel (5 months old). He is very well socialized since he goes to the dog park and mingles with them.
Should I keep them apart in the house at first (in two separate rooms?) One in the basement and one on the main floor?
Because my ****er spaniel goes to dog parks, should I prevent it from playing with my upcoming great pyr pup?

I have a containment fence for my ****er (in ground) and it seems to be working well. But knowing the reputation of great pyrs, I'm very much concerned as to whether I should purchase a fence..

Thanks in advance for the insight