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.
Ferrets are carnivores. Ferrets, like cats, are obligate carnivores (meat eaters). They cannot survive without meat in their diet. However, although fresh raw meat is part of the ferret's natural diet, it may contain harmful parasites and micro-organisms that create risks unacceptable to pet owners.