Twin Tailed Lizard
The Twin Tailed Lizards would feast upon their favorite meal, which was the eggs of the Dagger Beak Falcons.
Their scales also looked similar to the surface of the Spindle Hills, which provided them camouflage and helped them avoid the retaliation of the Dagger Beak Falcons.
After all, even if the Twin Tailed lizards were stronger than the Dagger Beak Falcons, a swarm of them could still end their lives rather quickly. Even if it meant death of all those that attacked them.
In moments like those the predator would become the prey. This was how a balance was achieved in the Spindle Hills, where the number of Dagger Beak Falcons was kept at a certain limit and the same happened to the Twin Tailed Lizards.
If not for that, perhaps these beasts would have spread further to other areas too, causing greater issues for the players.