Possible Clues:

• Two-footed
• Walking on two feet
• Using two feet for walking
• Like humans
• Piebald horses around humans are like this
• Able to stand blood pressure initially, ideal to exercise
• Bail out over outskirts of Poole, with spot of difficulty standing upright
• Like human or ape build, not universal, unfortunately
• Mostly great exercise to have boy brought up like a man, perhaps?
• Two-legged