Giardiasis, commonly referred to as beaver fever, is a typical gastrointestinal ailment brought on by the protozoan parasite Giardia lamblia. This tiny parasite can infect humans and a variety of other animals and is widespread around the world. The term "Beaver Fever" derives from the fact that beavers are frequent Giardia carriers and that the parasite can contaminate beavers' natural habitats, including lakes and streams. Giardia cysts, the parasite's dormant and contagious stage, are frequently found in contaminated water or food and are the main route through which Beaver Fever is spread. These cysts, when consumed, might result in symptoms like diarrhoea, cramping in the stomach, bloating, gas, and nausea. If the symptoms are not appropriately treated, they can last for many weeks and often emerge 1 to 3 weeks after exposure. The study of stool samples, where the presence of Giardia cysts can be discovered, is normally how Beaver Fever is diagnosed. A doctor's prescription for antibiotics like metronidazole or tinidazole is frequently used as a kind of treatment. In order to stop the parasite from infecting others, it is essential to practise good personal hygiene, which includes complete handwashing.In conclusion, Giardiasis, often known as Beaver Fever, is a digestive disease brought on by the parasite Giardia lamblia. It is frequently connected to contaminated water sources, especially in remote or outdoor areas. Although the term "Beaver Fever" may be amusing, the sickness can have unpleasant symptoms and is best avoided by following good hygiene habits and drinking only safe water.