People keep pets for entertainment and company. Pets are appealing to many for their appearance and characteristics. The common pets being fostered are dogs, cats and birds. Usually, domestic animals have been adopted as pets, but in rare cases exotic pets have also been owned. The pets have a name which the owner uses to interact with them. Even though it is fun watching the interaction of the pets, pets can cause health problems to the owners. Asthma and allergic reactions have been triggered by the use of pets. The parasites residing in the body of pets will create big problems for the humans. Eventhough trained, animals may act according to their instincts at times. Therefore, people have to guard themselves from fatal attacks and bites.