Oestrus Ovis, also known as nasal fly, is a common issue faced by sheep and goats. It occurs when a female bot fly lays her eggs in the animal's nostrils. These eggs then hatch into larvae, which feed on the nasal tissues causing discomfort and irritation. Hence, it is essential to know some synonyms for this term to understand the various discussions on the topic. Other names for Oestrus Ovis include Sheep Nose Bot Fly, Nasal Bot Fly, and Sheep Nasal Bot. It is beneficial to be aware of these synonyms to comprehend research papers, articles, and discussions about this common issue in the livestock industry.