The kitty from the video needs to say the word "Choudai" which literally means "give me" in Japanese in order to receive treats from her owner.
Here is a rough translation for the video:
The kitty responded "Choudai." The owner asked him to repeat it again. He did so by saying "Choudai."
The owner tossed the treat to him, and he took off to get it. After he had returned, the owner asked "hoshi?" (which means "does it taste good?") The kitty said "en" (which is a way to express agreement in Japanese).