Okay, it seems that no matter what I do or how tight I fit Winnie's collar, she manages to wedge it up into her mouth like a bit and chew through it. I've had the vet fit the collar; I've had the trainer fit the collar. We've fit it so that there's no more than a finger-width of movement and no luck, she still manages. I've tried treating the collars with bitter apple, vinegar, tabasco and chili powder - none of these stop her.
We've tried several types of soft nylon collars and a few different leather collars - including a really stiff leather one. It did take her 3 weeks to wear through the stiff leather, but she still managed - and they're just too pricey to buy a new one every month.
Trainer suggested a chain collar next, but even at the smallest size, she still manages to get it up into her mouth. Thing is, I've never caught her doing it - I simply hear her whimpering and walk into the kitchen to see her bridled like a horse. I'm afraid to simply leave the chain collar for fear that she'll break a tooth or damage her gums, but I'm at my wits end.
Oh, and if she doesn't have a collar on, but she's with a dog who does, she chews that collar off, so it's not just a "I don't like this thing around my neck" - it's like, "this is fun to do."
My dogs cannot go without collars, that's simply not safe, but I don't know what else to do. Suggestions?