Could be intestinal worms. Could be the food. Check the bag the food comes in, If the first three ingredients are grain, it's no good. If it has corn, they can not really digest corn. His ribs should not be prominent. I strongly suggest a trip to the vet because it is undernourished.
Dog food
the pelican can eat a great dane as easy as a fish because the pelicans mouth can expand wider than thedog or what ever it eats
A Great Dane should not really have any exercise or play after eating, as they need to allow their food to digest, which takes a long time for Danes. Exercise or play straight after eating can injure a Great Dane internally (inside) and can eventually lead to death because it is not easy to spot and often later on in the injury the vet cannot do anything to help. Therefore, I strongly recommend that you wait at LEAST an hour and a half if not two hours before resuming play or exercise.
Not everyone eats rice, Its healthy at times, tasty, makes a great side dish and is great to eat with just about anything.
Choji, a character in "Naruto" eats a great deal. He is a comfort eater and eats to excess in times of trouble. He is also slightly overweight and very protective of his food.
The horned owl eats mainly rodents.But this powerful species eats about anything it can overpower.This may include other birds at times,and even mink and weasels have been taken by this owl.
sharks
great whites
great white
The tiger shark eats more humans than the great white shark
4 times
An animal that eats seals is a killer whale. And sharks. And Eskimo'sOrcas, great white sharks