Sauros

Sauros are an enemy species in Xenoblade Chronicles, Future Connected, and Xenoblade Chronicles 2. They are colossal Tyrannosaurus rex-like creatures with spines on their backs.

Xenoblade Chronicles
Sauros are found exclusively at Makna Forest. In Future Connected, they inhabit the Bionis' Shoulder.

Xenoblade Chronicles 2
Sauros received a redesign, they have a more smooth appearance than their predecessors, accentuating their likeness with the Tyrannosaurus rex. Sauros can be found in Gormott, and in Temperantia.