This explains why it's impossible to make pacemakers with replaceable batteries. 1  Sinus bradycardia is a common reason for needing a pacemaker. Read about sinus bradycardia. 2  Read about sick sinus syndrome. 3  Read about heart block.
What Do Ferrets Eat in the Wild? Dark-footed ferrets depend on prairie dogs for everything from food to shelter to safety. These wild members of the weasel family eat prairie dogs practically exclusively and also live in abandoned prairie dog dens. They rely on these large holes for protection from eagles and other predators.
The food ferrets eat must also be high in animal protein and fat to help maintain a healthy immune system. As long as ferrets have enough fat and protein in their diet, they have no need for carbohydrates. Having too many carbohydrates can cause insulinoma, a tumor of the pancreas, and diarrhea in ferrets.