Normal resting heart rate. It is important to identify whether your heart rate sits within the normal range. If disease or injury weakens the heart, the organs will not receive enough blood to function normally. The United States National Institutes of Health (NIH) have published a list of normal resting heart rates.
There are currently two recognized species of wolves, the Canis lupus, or grey wolf, and the Canis rufus, or red wolf. These are two of the species that comprise the Canidae family in the Carnivora order. The red wolfâs Genus name, Canis, is Latin for dog.
Gray wolf. Â© Jeff Lepore/Photo Researchers The gray wolf (Canis lupus) is thought by most scientists to have given rise to the domestic dog, a key event in the evolution of our species that may have occurred as early as 32,000 years ago and certainly by 14,000 years ago.