Thanks guys! I was actually worried more the minerals (i.e. iron and magnesium) causing toxicity, but I thought it would be more a long-term thing and I have to keep switching up treats since Belle gets bored with them. I normally do break treats up, but these are actually crunchy, and pre-cut into small pieces, so it's very difficult for me to make them smaller.
I don't remember, is Vitamin A fat-soluble or water-soluble? I do remember that water-soluble won't build up in the body (like Vit. C -- extra just gets flushed out). Unfortunately, since there is only one ingredient, that probably varies in quality (beef liver), I don't have any kind of analysis on the container as far as vitamins/minerals, so don't know how many IU of Vitamin A she'd be getting from x number of pieces. Just the basic protein, fat, crude fiber, and moisture content.
Anyway, I am relieved by your responses. It doesn't seem that I'll cause her problems by treating a bit more than the container recommends, as long as I don't go waaayyy overboard (and that was all Belle was worried about)
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