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.
When Do Black Footed Ferrets Eat? Were Do Black Footed Ferrets Sleep? What are Some Black Footed Ferret Facts? How Do Black Footed Ferrets Protect Themselves? Where Do Black Footed Ferrets Live? Why are Black Footed Ferrets Endangered? How Long Do Black Footed Ferrets Live? How Do Black Footed Ferrets Communicate? How Big Do Black Footed Ferrets Get? How Do Black Footed Ferrets Reproduce? Where Do Black Footed Ferrets Come From? Where Are Black Footed Ferret Pictures? How Do Black Footed Ferrets Find Food?