Hi, my dad comes to us for Christmas each year, he's in his 80 ' s and lives 120 miles away, near my sister. He has a black lab who normally goes to my sisters but she is getting a new puppy soon and says she can't have dog due to jabs etc. We have a 5 yr old cat and I don’t know how she would be with a visiting dog, it'd be for about 5 days . Any views?