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.
What Do Ferrets Eat? Though many people believe that ferrets are a type of rodent, they are actually domesticated from wild polecats, a type of weasel. Domesticated ferrets cannot hunt their own prey if left to survive on their own, but their nutritional needs are much the same as their wild ancestors'. Ferrets are carnivores with short digestive tracts, which means that they cannot digest carbohydrates very well and should be fed a diet mainly consisting of protein.