Human: I'm planning a trip to the Grand Canyon. What are the best things to see? Assistant: 
The best things to see at the Grand Canyon include the Colorado River, the canyon walls and the view from the rim trails. You should also take time to explore the many side canyons and look out for wildlife such as bighorn sheep, mule deer and raptors. If you're an adventurous type, you might want to try rafting or kayaking down the river or taking a helicopter tour.