Mutated animals could develop abilities. That wasn't news to Khan. However, seeing the wolf use his spell made his mind go blank.
Thoughts quickly returned and allowed Khan to make some sense of the event. The spherical version of the Wave spell wasn't the result of the human arts. It was a mere explosion founded on an intense feeling. In the wolf's case, hunger probably was the fuel.
The spell continued to expand, digging a hole into the ground and putting the monster in a problematic situation. As soon as the purple-red color vanished, the wolf found itself at the bottom of a pit, which wasn't easy to escape with two broken legs.
The difficult situation didn't demoralize the wolf. It howled and growled in hunger while doing its best to crawl out of the hole. The creature didn't have anything else in mind.