tuna

Tuna contains more mercury than many fish, so long-term heavy feeding carries a risk of mercury buildup. Cats face another risk: eating human tuna (especially red tuna) as a staple for long periods can deplete vitamin E through excess unsaturated fats and cause steatitis (yellow fat disease) with pain and fever. Complete tuna-flavored cat foods with added vitamin E are not the concern.

Other common names: tuna fish, skipjack tuna, albacore tuna, bluefin tuna, yellowfin tuna, 鮪魚, 鰹魚, ツナ, まぐろ, かつお, 金槍魚