Originally Posted by Cookie_chihuahua
I google it already some of the reviews telling is ok but the other ones are telling it is dangerous if the amount is too much. This is the reason why I want to have some advise from you guys!
Sure almost everything is dangerous in too large amounts, even vitamins and minerals. But why would a dog food (especially a high quality brand like Orijen) be putting dangerous doses of minerals in their food? It wouldn't make any sense. I'm sure they're putting just the right amount.
The 100mg of zinc is per kg of food (not in each serving), as you can see here
on the all about dog food website.
I also looked on many websites and they all say that a dog needs 120mg of zinc per kg of food consumed so the 100mg in Orijen is safe. It must have just been added to make up for what was lacking in the food naturally.
Also the dangers of zinc poisoning that you may have read about online are caused by ingesting things like pennies that contain a lot of zinc (we're talking about thousands of mg in just one penny, for example).
Hope this helps, you don't need to worry. Your chi is a lucky dog being fed a very good quality food.