At the beginning of the short film, Shifu left Po and the bunnies at the Training Hall, and went out the door. But at the end of the short film, he was seen walking to Po when he was trying to calm the bunnies down. If he left the Training Hall, he should've entered by opening the doors instead of appearing out of nowhere.
Most of the animals depicted are native to China, however there is also a tribe of gorillas which are native only to Africa.