The national animal of Nepal is the cow.

Explanation:
The cow holds great significance in the cultural, religious, and economic aspects of Nepal. Here is a detailed explanation of why the cow is considered the national animal of Nepal:

Religious Significance:
1. Hinduism: Nepal is predominantly a Hindu country, and cows hold a sacred place in Hindu religious beliefs. They are considered holy animals and are often associated with the deity Nandi, who is the vehicle of Lord Shiva.
2. Goddess Laxmi: In Hindu mythology, the cow is also associated with the goddess of wealth, Laxmi. It is believed that Laxmi resides in cows, and therefore, they are considered auspicious.
3. Cow Worship: In Nepal, cows are worshipped during the festival of Tihar (also known as Diwali) as a part of the ritual called "Gai Puja." During this ritual, cows are adorned with garlands, vermilion, and tika (a mark on the forehead), and they are offered special treats.

Cultural Significance:
1. Agriculture and Farming: Nepal is an agrarian society, and cows play a vital role in agriculture and farming. They are used for plowing fields, transporting goods, and providing milk, which is a staple in the Nepali diet.
2. Dairy Industry: Cows are also crucial for the dairy industry in Nepal. Milk and dairy products like yogurt, butter, and ghee are widely consumed and contribute to the country's economy.

Economic Significance:
1. Livelihood: Many Nepalese people, especially those in rural areas, depend on cows for their livelihood. They rear cows for milk production, sell cows and their products, and engage in activities like dairy farming, which helps them generate income.
2. Export: Nepal also exports dairy products, such as ghee and cheese, to other countries, contributing to the country's economy.

Conclusion:
Considering the religious, cultural, and economic significance of cows in Nepal, it is no surprise that the cow is designated as the national animal of the country. The cow symbolizes prosperity, sustenance, and reverence in Nepali society.

National animal of Nepal is Cow