OK Jackie I just need to know a couple more things that you've probably told me before so bear with me.
How old is Perry now and has he been neutered? How long have you had him? Is he ever aggressive to Daisy, you or over food?
Are they left on their own for any length of time on a regular basis? Do they have their own beds?
Now the all time favourite.....do the dogs sleep with you?
Thanks, I'll check back later.