The Ferocious Beast's Past Life, the Lazy Dog's Present Life

In his previous life, he was the leader of the alien beasts, but he was wiped out by the saint with a slap. After his rebirth, he became the lazy dog ​​genius' first pet. The master is full of talents, but he can lie down and never stand. In order to survive, he was forced to do reverse training - whipping his master with his tail for training, helping his master acquire new pets, and having to compete with the new ones for favor. The problem is, he personally caught those new pet beasts. One is more coquettish than the other, and one is more favored than the other. As for him, a veteran, his status has plummeted and he can't compete. Later, he discovered that the master who had been lazy all his life was not that simple. --- [Beast control + rebirth + reverse training + pet beast competition + two-way protection]