If you and the herd are being attacked and can't fight them off, run a safe distance away while they are still fighting. Click on your herd members one by one and send them home. They will immediately abandon the fight. Run a little bit further away then click on them again and hit the arrow to call them back to you.
Flying Horse
1. Find a local villager and accept transport duty
2. Go to your nearest den with the citizen on your back
3. Select the sleep button while in den
Your horse will fly up really high for about 5 or 10 seconds. Once finished and on the ground, go back to your den and sleep again and you can fly once more if you'd like to again.