Symptoms of mercury poisoning in cats include loss. However olive oil is considered cat-friendly. Symptoms of mercury poisoning include unsteadiness and loss of coordination.
One hypothesis is that cats lack the receptors for sweet or bitter-tasting foods and are therefore driven toward salty fishy foods. Cats can eat tuna as a treat and in small amounts once or twice weekly at a maximum. Many commercial cat foods actually use tuna or some other fish as a prime ingredient when developing their balanced formulas. Symptoms of mercury poisoning include unsteadiness and loss of coordination.