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 major dietary difference between mink and ferrets is that mink naturally eat fish, and ferrets do not. Fish is a major ingredient in all commercial mink rations. Some ferret foods are made with poorly processed frozen fish that give the pellets a flavor unacceptable to many ferrets.