He never did a lot of things that I would have used it for. Mostly, it was to protect Dh's thinning skin.
Krypto, like most pups, wants to get involved when someone gets down on the floor, so when Dh leans down to get Henry, goes after something under a chair, etc. Krypto wants to see what's wrong that Dh is down there, and it takes nothing to break Dh's skin with his nails.
Now, he's really good; he sits next to Dh but doesn't paw at him, put his muzzles in his neck, etc.!
The latest thing for the squirt bottle is jumping against the door when Ds comes over. I worry because the top is glass, and there's a pie shelf on it. He's doing great with it, and is much calmer when Ds shows up as he's aging. But, even at his most excited, he's not jumping on the door nearly as much. I'm hoping to break the habit completely this week, before he breaks the glass and gets cut!
Thank you for the information!
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