However even 18 hours is not considered abnormal for a Chihuahua. This includes naps.There are 2 types of sleeping. One is a lighter sleep (called slow wave) and the other is the deeper sleep (known as REM-Rapid Eye Movement). Dogs, just like humans do have these 2 different types of sleep.
Probably the best known snake in the world, the Rattlesnake is a pit viper found almost everywhere in the United States, and is capable of a deadly bite. Its trademark rattle strikes fear into anyone who hears it.
In this column we will look at snake bites focusing on field management. Approximately 8000 people are bitten by poisonous snakes each year and 10-20 people die from envenomation. In the United States there are 2 different groups of venomous snakes. Pit vipers include rattlesnakes, copperheads, and water moccasins. These snakes account for the vast majority of bites in this country.