We had a beautiful Maine Coon boy (who sadly crossed Rainbow Bridge the week of Thanksgiving) that we had for 12 yrs before we got our first furbutt...Mckenzi was fine the the pup but, the pup didn't like her..thought they would get used to each other....it didn't...they lived together but, anytime the cat would come to us for affection for whine for food she would attack him...then we got another pup....I think because Sadie didn't like him she taught Lillie to not like him...I would never bring another cat into our home as long as we have the girls...and now a new little boy...
That being sad....When I was married to my first husband We had 3 dogs and 6 cats and they all lived together great....not sure...maybe it's just yorkies and their fearless ways?!