We have a 9 month old Sheperd Pyrenees Rottie mix, she is spayed and is an inside dog. She is very high energy and we take her out for runs whenever we can (lately it has been way too cold to go out, so I am aware she is lacking in the exercise department but there's only so much we can do inside). She does go to daycare once a week which REALLY helps on that day.
She is generally a quick learner but is very strong willed and will usually only listen on her own terms (unless there are treats involved). She is HIGHLY food motivated, to the point where she shows aggression with anything food related. We now hand feed her meals by holding her food bowl and putting her food in little by little, which generally helps and slows her down as she would just inhale her food without chewing before (you can usually put your hand on her or pet her now while she is eating to show you're not the bad guy, but she does still growl at times). Treats like bones and kongs are still an issue but there are just simply times when we need her to go lay down while we are doing something so we give it to her anyway and let her have it by herself on her bed. However when it is time for her to stop chewing on it, she is very protective and will growl and snap when you try to remove it (sometimes to the point where we are actually afraid she may bite). We were recommended to take a high value treat and throw it in the opposite direction so she will need to get up and leave the item to go get the treat, so we are doing that now which usually helps. As soon as the item she is guarding is removed she is totally fine and doesn't try to get it back.
We are trying to undo some habits that have formed which we think are making her feel like she is the dominant one of the household (such as being able to sit on the couch). There is progress being made with this one which is great. Her listening skills are terrible though unless you have treats.
I guess a big question is how do you train a dog using treats without enabling the food aggression tendencies? I don't want to be inadvertently reinforcing the bad behaviour, however she just simply doesn't listen well when there are no treats involved. She loves to play with her puzzle toys that dispense treats, however we were warned by a local trainer that these toys may make the problem worse which we obviously don't want, but she still needs the mental stimulation. Recall is a whole other story too, she absolutely won't come back to you outside so we can only take her out on a leash now.
Any suggestions?