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==Toxicity==

==Toxicity==

There are no studies on either acute or chronic toxicity related to feeding high doses of threonine to dogs and no reports of safe upper limits. Kittens fed purified diets containing threonine at 9x the requirement for growth showed no adverse effects.7 There are no studies on acute or chronic toxicity of high dose threonine in adult cats.

There are no studies on either acute or chronic toxicity related to feeding high doses of threonine to dogs and no reports of safe upper limits. Kittens fed purified diets containing threonine at 9x the requirement for growth showed no adverse effects<ref>Taylor TP, et al. Optimizing the pattern of essential amino acids as the sole source of dietary nitrogen supports near maximal growth in kittens. J Nutr 1996;126:2243-2252.</ref>. There are no studies on acute or chronic toxicity of high dose threonine in adult cats.

==Dietary Sources==

==Dietary Sources==