Hi
I have a 12 year old desexed male Collie cross called Mitch who is generally a great dog. He's great company, obedient, smartest dog I have ever owned or met face to face and a very much loved member of our family. The only dramas we have ever had with hiim is that he barks a little too much (only when there is some kind of stimulus e.g. motorbikes, sirens etc) and unfortunately he's no good with children. The vet and behavioural specialist we took him to, both believe he may have had a traumatic experience with a child when he was younger and that is the cause.
Lately though we have been noticing some other odd behaviours creeping in. Now that he is getting a bit older we do spoil him more often and regularly let him jump up on the couch with us or when I'm away for work, my fiancé will let him sleep in the bedroom with her at night because she feels safer with him there while I'm away. I've noticed sometimes when he is lying with me on the recliner chair that he will push one of his legs very firmly against my chest or arms and growls if I try to move it. Other times he will bare his teeth at me for no reason at all or he will look at me and start a very low angry sounding growl. Whenever he does this I immediately put him on the floor and make him lay on his mat.
The most worrying issue though is that I've also noticed sometimes at night when I put him to bed on his bed in the garage he has started baring his teeth and snarling at me. This is happening more frequently now. We used to have a bedtime ritual where I would take him outside to do his business, we'd come back in to the garage and he'd get on his bed, I'd sit next to him and he'd lick my face (like a good night kiss) and then he'd lay down and I'd put his blanket on him. Lately though I don't feel 100% safe about putting my face near his given that the snarling and growling comes from nowhere.
I'm wondering if our spoiling him has changed the "pack" structure in our house and he feels that he is now in charge and allowed to get away with more now.
I've read about dog dementia and other brain related illnesses that can change a dog's behaviour unexpectedly.
Any suggestions.
Thanks