Okay, so after we literally hiked up hill for 4 hours on Sunday, I get to work Monday and a co-worker tells me the genius secret to how not to walk up hill at the zoo.
You park in Africa and take the tram to the top of the hill and walk back down the hill to the tram station, seeing all the lions, elephants, and monkeys in-between.
Then, you take the tram back to the top of the hill and walk down to North America. Then, you take the tram all the way back to Africa.
Otherwise, be prepared to sweat! And, yes, I loved the puffins but the otters were a close second!