Final regulations to implement ACA provisions, issued in 2013 by the US Department of Labor (DOL), said health-contingent wellness programs can vary group health plan premiums or cost sharing based on health status and will not be considered to discriminate based on health status if they meet five standards.
It's only a partial answer, but a Nile crocodile can eat up to half its body weight at a sitting, according to National Geographic. Since few freshwater fish weigh half as much as a crocodile, we can probably assume these croc feasts occur when they're able to ambush ungulates (e.g. zebras and antelope).
Wild jaguars eat almost any animal. In the wild they eat peccaries, wild pigs, capybaras, large rodent's, deer, sloths, caymans, tapirs, fish, and smaller animals. They also eat sheep, armadillos, turtles, crocodiles, and cattle. Jaguars are expert hunters. They hunt in water, land, and trees. Trained jaguars eat mostly the same things.The food has vitamins, which is important for them.