@mattandjean Thank you so much for listing your initial question, and the explanation of your update. I’ve had my 9 week old GSD for a week and she is being a puppy and starting to really test limits.
She also does the feet/ankle attacking. I’ve tried stopping and standing still, but that doesn’t work, as she’ll just lay down and keep gnawing. During the morning/afternoon redirection doesn’t work at all, but at night in the middle of her evening maniac zoomies I have been able to mostly redirect her with a toy.
She doesn’t spend a whole lot of time in her crate, mostly after meals to keep her quiet, and a nap or two when she gets out of hand. I was cautious about putting her in there a lot, because I thought it might make her hate the crate and, by extension, make her not want to listen to me.
But perhaps spending more time in the crate would help?