Greatjagras

The pack leader of the Jagras. When hungry, Great Jagras are known to attack monsters even stronger than themselves. It balloons to unbelievable proportions after swallowing prey.
Great Jagras is able to swallow large prey whole in one gulp, allowing it to use its immense weight to fight off any potential threats. On very rare occasions, it will also vomit at the hunter if its stomach is bloated, which is similar to the Great Girros' Paralyzing Spit. Its attacks can greatly vary in battle, depending on whether it has eaten anything or not. If the monster has a full belly, it'll try to use its own weight to crush hunters.
Can also play a normal Jagras for those really unlucky.

(The Monster is from Monster hunter I own nothing.)