Tolerated in small quantities

If an ingredient in a dog's diet is described as "tolerated in small quantities", this means that this ingredient is not generally harmful to your dog, but should only be fed in limited, small quantities. There can be various reasons for this:

1. Digestive sensitivity: some dogs have sensitive stomachs or digestive systems. Ingredients that are tolerated in small amounts could cause digestive problems such as diarrhea or bloating in larger amounts.
2. Nutrient balance: Certain foods may contain nutrients in concentrations that are not ideal for your dog's long-term diet. Too much of these can lead to an unbalanced diet.
3. Toxicity at high doses: Some foods may contain substances that can be toxic to dogs in high doses, even if they are safe in small amounts.