As Yoshi was face to face with the apparent king of the Ankylosaurus, the golden-colored Ankylosaurus roared loudly as he stomped his feet, causing the entire cavern. Yoshi managed to keep his balance, while his trapped all clenched onto the bars of their steel cages. Yoshi then eyed the Ankylosaurus King face to face, and he ran towards him, turning into and egg and rolling at fast pace.
The Ankylosaurus King grabbed his red crown with his right front leg and chucked it at Yoshi, knocking him out of the egg and backwards as the green Yoshisaurus landed on his back. Placing the red crown back on his head, the Ankylosaurus King bellowed loudly as he stomped towards Yoshi and attempted to squash him with his large, left front foot. Yoshi jumped out of the way, and he started running around the Ankylosaurus King, looking for a way to get back at the Ankylosaur monarch. Yoshi then got a grand idea and started to chuck his green-spotted eggs from the right side of the Ankylosaurus King, dealing some damage. The Ankylosaurus King roared with pain, and he glanced to see Yoshi running under his belly. Taking advantage of this, the Ankylosaurus King flattened Yoshi by pushing his body against the sandy ground.
Dr. Hoshi, Birdo, and Peppy all gasped as they watched Yoshi being flattened. When the Ankylosaurus King got back up and chuckled evilly, Yoshi was flattened, getting back up, only to be as thin as paper. Yoshi then shook around, returning to his original form, before being knocked towards the west wall with a whack from the Ankylosaurus King's powerful, large grayish tail club. Yoshi moaned as he plopped to the ground, getting up and moving left to right as he was dizzy. Yoshi shook his head, and jumped up and fluttered towards the hard grayish ceiling as the Ankylosaurus King tackled into the west wall, leaving a dent. Yoshi then stopped fluttering upwards and performed a ground pound, smashing the Ankylosaur monarch right on his hard-scale back. The Ankylosaurus King bellowed ever louder, and he stomped several times to force sand to come down from the ceiling. Yoshi slid off the back of the Ankylosaurus King by going down his tail, and the green Yoshisaurus jumped to the left, running towards the north wall. The Ankylosaurus King noticed this, and he started to spin around, propelling faster towards Yoshi.
Yoshi waited for the perfect moment, and he then dodged out of the way, watching the Ankylosaurus King crash into the north wall. Getting up and shaking his head, the Ankylosaurus King turned around, only to be pelted by green-spotted eggs. As the Ankylosaurus King shook his head again, Yoshi ran as fast as he could towards the steel cages and used his flutter kicks to break the bars off, freeing his friends. Yoshi then turned around and jumped out of the way as the Ankylosaurus King stomped down towards the area by the broken steel cages, with Dr. Hoshi, Birdo, and Peppy getting out of the way as well. Yoshi stopped and tried to catch his breath, but he was forced to run as the Ankylosaurus King swung his large, grayish tail club towards the green Yoshisaurus. Yoshi then noticed that Dr. Hoshi tossed in a healthy tomato, and Yoshi grabbed the healthy vegetable with his long red tongue, swallowing the tasty snack up and gaining health back as he jumped up into the air to avoid being crushed by the Ankylosaurus King's foot. Yoshi then came back down and started to flutter kick the Ankylosaurus King's head, finishing with a head smash. As Yoshi got back onto the ground and did his victory pose, the Ankylosaurus King bellowed in pain and rage one last time, and then fell flat on his face, being knocked unconscious.
Birdo, Dr. Hoshi, and Peppy all ran towards Yoshi and cheered him on, applauding his fight and thanking him for freeing them. Yoshi chuckled as he rubbed the back of his head, but the cavern once more shook, and it swallowed the four fellow dinosaurs up, leaving behind the unconscious Ankylosaurus King.
Boss King Ankylosaurus defeated!