We just adopted a 2yr 9 month old Basenji mix named Marley. He had two previous owners and is pretty obedient though his independence does shine through. We have a 9 year old black cat named Cassie who has been in a household with 2-3 other dogs her whole life and gotten along fine, but her front claws have been removed.
Upon getting Marley we followed the basic introduction guidelines; having them in separate areas where they couldn't see each other, but still get used to the scents, then slowly introducing in controlled environment etc. The interaction has gotten better. Cassie won't run and won't hiss or swat right off the bat, but Marley still snaps at her. This isn't a playful nip, it is a open mouth intent to bite.
We thought at first he just wanted to lick her and just nipped because he felt she was tense and would hiss and swat, but even with Cassie calm, Marley tries to bite. He is negatively reinforced for the bad behavior and positively reinforced when he is calm/doesn't lunge when he sees her, but when he is allowed to get close enough the biting tendency still has not stopped. It has been about a week. Marley, supposedly, used to play with a cat once in awhile, but since Cassie doesn't have her front claws, we are worried that Marley won't resist the urge to bite her and she has no defense. If Marley is loose in the house, Cassie tends to stay in the area of the house we have designated as hers and do not allow Marley to go, but we don't want her to feel trapped in there.
Is there any hope for this pair to become friendly or at least be able to be comfortable around each other in the same environment? Any advice would help! Thanks!