Photos include the red panda, lioness, tiger, giraffes, and prairie dogs.

Photos, mostly of the giant pandas (especially Tai Shan) at the National Zoo.

Photos from Columbus (Ohio) Zoo and Aquarium.

A visit on a very cold and snowy day to the Denver Zoo. Due to the weather, many animals were off exhibit, but many animals were also doing well in the cold weather similar to their native habitat.

Photos of animals at the Virginia Zoological Park in Norfolk, Va., including the prairie dogs (and babies), the red panda just relocated from the San Diego Zoo, and the new Fennec fox exhibit.

Photos of animals, mostly the giant pandas, at the San Diego Zoo on a rainy afternoon.

Photos at the National Zoo, mostly of the giant pandas (particularly of cub Tai Shan and female Mei Xiang) and red pandas. It was only about 30 degrees outdoors, so many of the animals were not on exhibit.

Photos of orangutans, silverback apes, elephants, tigers, elephants, giant pandas, and other animals at Zoo Atlanta.

Photos from a quick trip on a very busy day at the National Zoo.

Photos of the zoo and gardens at the Calgary Zoo.

Photos of animals at Zoo Atlanta. The giant pandas and red pandas are my favorite animals. The female panda (Lun Lun) was not on exhibit as she might have been pregnant and about to give birth (edit: she was, and she gave birth to Mei Lan less than 2 weeks after my visit), but I got a number of photos of the male, Yang Yang.

The red panda spent most of the day in his "tree house" due to the heat, but he spent some time outside earlier in the day.

End of album has photos of the Martin Luther King Jr. historical site.

Philadelphia Zoo