Almost the size of a football the Colorado River toad lives in central Arizona near water.
Llamas were tested in 1985 in Grand Canyon on the North Kaibab Trail. They laid down refusing to move near Manzanita Creek due to heat.
Warning: heat kills!
Avoid 8am to 5pm over 90 degrees. Prehydrate & stay hydrated.
Avoid Heat Illness - do NOT hike when temps exceed 100 degrees, period.