We had a black lab mix that passed away a few years ago. She was about 5 when we introduced Allen to her. At first, she wanted to EAT Allen because she never met a cat.. and it looked like dinner to her. We kept Allen locked in a spare bedroom and introduced each other slowly. After a few weeks, they were allowed to spend extended time together and became best buddies (they slept cuddled together... it was soo sweet.) Allen went into a depression after Sammie passed away

About a year after we introduced Allen and Sammie, we introduced Nicki into our hme. Nicki lived with my parents and never met a cat before. We didn't need to separate Nicki and Allen for nearly as long because Allen immediately realized that Nicki was a wimp and he started to be boss of her!