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.
Snakes are limbless reptiles with elongateââ bodies that are covered with scales. All snakes lack external ear openings and eyelids and have loâng, forkeâd tongues. â. There are twenty-seven different vaârieties (species and sub-species) in two families of snakes that can be found in Maryland.ââ. Two Maryland species, the copperhead (Agkistrodon contortrix) and timber rattlesnake (Crotalus horridus) are in the viper family (Viperidae).