Toucans and toucanets are members of the family of birds called Rhamphastidae. They require a high-moisture diet and have a relatively short digestive tract, so food moves quickly through their digestive tract. Low-iron pellets and fruits should make up most of their daily diet. Iron storage disease, called hemosiderosis, is common in these birds when they are fed a diet high in iron.

Obesity is a major problem in older birds on seed-based diets and can contribute to diseases such as arteriosclerosis, atherosclerosis (fat deposits in major arteries), and fatty liver disease (hepatic lipidosis). Unlike their wild counterparts, pet birds are not given as much opportunity for daily exercise. Pet birds often burn off very few calories in their daily lives. Switching a bird from an all-seed diet to a more suitable diet consisting mainly of pellets, with smaller amounts of fresh vegetables and fruit, will decrease its overall daily intake of calories.