Foot-and-mouth disease. It infects cattle, sheep, and pigs.
fungtidise
Vaccines, such Fluvax, can prevent viral disease.
There are several- one of them is polio.
Most viral infection are specific to the species of animals involved. For example Canine Distemper is unique to dogs. There are however quite a few viral deseases that can use more than one kind of animal: rabies, parrot fevour, swine flu, herpies, lymes desease. Bacterial infections can affect wide ranges of creatures: Tuberculosis, Anthrax,
One reason why a persons tongue is blue can be due to them eating a blue candy. Blue tongue in animals is caused by a viral disease of ruminants, it happens mainly in sheep and less frequently cattle.
An organism that carries a disease-causing microorganism from one host to another is called a vector. An example of a vector is a deer tick carrying Lyme disease.
Viral diseases are most likely to cause epidemics. The recent H1N1 flu virus is one example of this. One other major epidemic, which is not of infectious disease origin, is the obesity epidemic in the U.S.
AIDS
Often, many viral videos are promoted by famous people or advertisements. For example, The Bed Intruder Song, one of the largest viral videos of 2010, became viral after one of the most subscribed YouTube users made a remix of the song. It almost takes a miracle for a video to become viral without any help from ads or famous people.
Many marketing campaigns which go viral have something in their ads which seem to appeal to people. A funny or comical ad which one will remember will go viral before a plain one. A recent example is the K-Mart marketing campaign titled "Ship My Pants".
Staphylococcus aureus skin infection. Streptococcus pyogen throat infection. Streptococcus pneumoniae respiratory (lung) infection. And many, many more.
One - and a very serious one - is rabies.