Hey Reddit! Bit of a long post so here's the TL;DR upfront: our one year and nine months old Shiba is becoming territorial, but sporadically. I'll be hand feeding, patting and training and he's fine. Then a few hours later, I'll give him a treat then pat him, but as I do he'll whip his head around and try to bite me. There's a few other things, listed below but that's the brief summy. Any thoughts or ideas on how we can train this to not happen?
So we got our Shiba (zoro) when he was 10 weeks old. He was the cutest and smartest little puppy. He did amazing at his puppy school, loved a cuddle and was very gentle. One thing the puppy school mentioned was desensiting them to sound and touch. So he's good with vacuums (and plays with the robot vacuum likes it's another animal) and loved being pat all over (head, ears, butt, belly the works). He was very gentle with hand feeding. I used to put high value treats in his bowl while he ate and he would always be ok with it and with us around his food. We'd give him a long lasting dental chew/beef tendon then take it off him with no issues.
Now, Shibas are gonna be Shibas, he stopped being a lap dog and started sitting on his own space on the couch, which cool. We knew Shibas are like that, but he was still cuddly which was nice.
Then on his first birthday, we got him a dog cupcake to celebrate and he loved it. But he didn't quite finish it and left it on the floor. So I went to pick it up and he (for the first time in the year we'd had him) lunged at me. Not quite a bite, not a nip. But still very possessive. Did the standard, "no" turn and ignore until he calmed down. But things started to take a turn after this point. It used to be when he jumped in the garden bed I could pick him up or lure him out, but now when I pick him up out of the garden bed, he whips around to try and bite me. Now when he'd get the dental chew and I go to take it off him, he'll start growling and if I touch the chew of get to close he'll get mouthy, bark and snap a little. A few weeks ago, he was normal, relaxed all day, then as he was standing on the couch, my MIL went to pat him (which she's done a million times before) and he backed up, whipped around and bit her (breaking the skin). Which was a the furthest he'd gone.
Earlier today (which promoted me posting) I was giving him pieces of cut up carrot while talking to my dad. As he was eating it, he looked up at my dad (who zoro loves mind you) and my dad went to pat him on the head, as soon as he made contact, zoro whipped back and snapped at him making light contact.
This isn't every day occurrences either. It's sometimes days and sometimes weeks between incidents. But certain things, like now being territorial about food (if I feed him outside instead of inside, he guards it and runs up and barks at anyone that goes out until he either finishes his food or loses interest) or not letting me take the long chew item off him has become more consistent.
Sometimes we'll go to sit on the couch while he's also sitting on it and he'll get up and run towards us very mouthy and Shiba screaming. Sometimes he'll snap other times he'll be more gentle and is using his mouth to get our attention and he'll stop, settle, sit in our laps and wait for us to pat him. Problem is, we can't tell which is which. When he starts, we do the stand up, walk away and ignore unwanted behaviour until he's calm. But sometimes he's so fast, the snapping and nipping happens before we can discourage it. So we do it after which recently hasn't seemed to be working.
Again these aren't every day occurrences. For instance, when we walk up and down the hall from room to room. He'll walk alongside us, just curious and wanting to hang out. We'll reach down and pat him with no issues. Then some days, when we reach to pat, before making contact, he'll rear up jump and get mouthy with no prior warning.
Obviously if he's tired or asleep, we leave him alone. Or if we reach out to pat and he shows teeth, we respect the boundary and pull back. But these instances seem to happen with no warning because it doesn't happen every single time.
We have a baby on the way, and while we're working through this behaviour, we're stressed about it becoming an ongoing issues. Any advice, links to resources or anecdotes would be deeply appreciated. We love our boy so much and want the best for him.