Goku's eyes were wide as he ran along the other troops. Sure, he thought it'd be cool to be here since it was something new and different and he could go back to Konzen whenever he wanted, but he hadn't thought they'd be asked to go into battle the very first thing when they got here. He had no experience at war, unless you count punching out the Poop-head that was Nataku's father.

He ran by Einhard, backtracked right in front of her, pointed at Teo, and said: "Hey! Can I pet him?"

Only Goku would want to stop to pet a cat with an army bearing down on them.