− | Lysine is an '''essential amino acid for dogs and cats'''. Lysine is classified as a [[Amino Acids Overview - Nutrition|'''ketogenic''' amino acid]] and contains a long, positively charged side chain. Dietary lysine is absorbed by a [[Nutrition Glossary#Dibasic Amino Acids|dibasic amino acid]] transporter in the [[Small Intestine Overview - Anatomy & Physiology|small intestine]] (particularly the [[:Category:Small Intestine - Anatomy & Physiology|jejunum]]) and plasma lysine is actively reabsorbed in the proximal tubule of the [[:Category:Kidney - Anatomy & Physiology|kidney]]. | + | Lysine is an '''[[Nutrition Glossary#Essential Nutrients|essential]] amino acid for dogs and cats'''. Lysine is classified as a [[Amino Acids Overview - Nutrition|'''ketogenic''' amino acid]] and contains a long, positively charged side chain. Dietary lysine is absorbed by a [[Nutrition Glossary#Dibasic Amino Acids|dibasic amino acid]] transporter in the [[Small Intestine Overview - Anatomy & Physiology|small intestine]] (particularly the [[:Category:Small Intestine - Anatomy & Physiology|jejunum]]) and plasma lysine is actively reabsorbed in the proximal tubule of the [[:Category:Kidney - Anatomy & Physiology|kidney]]. |