The Dog That Followed Yudhishthira to Heaven

A stray dog joined him and later became the most loyal companion of Yudhishthir.

The dog represents the actual identity of Lord Dharma.

Indra, king of heaven, refused the entrance of the dog to heaven.

Later, the dog exposed itself as the Lord Dharma (the god of righteousness, mortality, and purity).

The loyalty of the dog towards Yudhishthir reminds him of his commitment to Dharma

At last, the dog that was revealed as Lord Dharma was allowed to enter heaven.