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.
Also watch for added sugars (sucrose, fructose, corn syrup, etc). Just a note: ferrets may not like the taste of foods high in fish (and they may make the litter box pretty smelly too), though some cold water fish such as salmon are an excellent source of fat.