If you listened to a bat with a stethoscope you would hear their irregular heartbeats. Bats heartrate changes rapidly. When flying or hunting their heartrate ranges from hundreds of beats per minute to over a thousand. On the other hand, when they hibernate in the winter their heart rates can drop to under ten beats per minute. 

When squirrel kits are born they have no fur and no eyesight. They rely on their mothers for the two or three months even though their eyes open around two weeks after birth. Around seven to eight weeks of age squirrels are weaned; meaning they can consume food other than milk. At ten to twelve months squirrels can begin to reproduce. Typically, females will have around 2 litters every year. One born in the late summer and the other in early spring. During the first year of their adult life females will have no more than one litter.

Skunks have an interesting immunity or high tolerance to venom. Skunks diet consists of normal foods, but also includes bees, wasps, yellow jackets, and poisonous snakes. They are extremely clever when it comes to catching this prey as well. To lure out bees skunks will scratch at the hive to alarm them. The bees will fly out to respond to the threat allowing the skunk to catch them. When consuming their prey skunks suck out the insides and spit out the carcass. As they feast on the bees it is likely they will be stung but often choose smaller hives to avoid too many stings. While skunks have seemingly high tolerance to bees, there have also been cases in which they died from bee stings. 

Chipmunks are not particular about their diet. They eat everything including seeds, grain, nuts, fruit, insects, eggs, as well as baby birds and mice. Another main staple in their diet is fungi. Mushrooms and other forms of fungi can be connected to a structure that supports trees. This structure protects the roots and helps find water and nutrients in the soil. When chipmunks consume this fungi it they carry it around as they travel until it is digested. The deposit of the fungi helps spread the population and nourish trees.