Question: why cant all animals stand on two legs?

Jason Mc Guire answered on 19 Nov 2019:

They dont need to! Animals and plants evolve slowly over time. Humans have needed there hands to make tools, so they stand on 2 feet. Meerkats often stand on 2 feet to look at their surroundings when they feel in danger. Penguins have lost the ability to fly and have thick warm coats as they didn’t need to fly, but needed to keep warm.