Zoo keeper and herpetologist Todd Schmidt has a bachelor’s degree in zoology and botany and also has a neat tattoo of a turtle on his calf. The first thing we learned was that herpetology is the study of reptiles and amphibians. As we explored the interior of the Reptile House we found that it must be kept at regulated temperatures and humidities for the many snakes, lizards, frogs, and other animals kept there. The climate is adjusted to replicate the animals’ natural habitats. In the case of many of the reptiles, that means tropical rain forest and it really felt like one! Although in some of the rooms the temperature was only around 72 degrees Fahrenheit (22 degrees Celsius) with the humidity, it still felt very hot.
The first animals we encountered were snakes. On the back of each venomous snake exhibit there were red plaques stating the type of venom and the anti-venin that corresponded to it. Although the Zoo has lots of all types of anti-venins, snake venom can be made from 23 to 26 unique proteins, and not all snake venom has an anti-venin to treat it. However, the keepers take many precautions against snake bites. For instance, when dealing with snakes that spit their venom, special masks are worn to protect the face.
Mr. Schmidt took out a young Angolan boa (not a venomous snake) for us to see and touch. I have always loved the way snakes feel, all muscle with smooth scales. These particular boas are not being threatened by the normal problems of habitat loss, but are in danger because of war in Angola. In the desperate times of war anything that can be caught is eaten, and snakes are the slowest and easiest animals to catch.
We learned that just as new animal species are evolving in nature, extinction can also be a natural process, not always caused by humans. A hurricane on a tropical island might decimate the population of a frog species for instance, and the species might not be able to recover from the loss. However, to preserve animals in their natural habitat and in “back up” populations in zoos and other conservation facilities, the San Diego Zoo is involved in Species Survival Programs (SSPs) for specific endangered species.
One such animal is the Fijian banded iguana, a bright green iguana with light blue bands running down to the end of its tail. This species of iguana is particularly in danger of extinction because of its limited range (it lives on a few islands in the Fijian Island group). To take steps to prevent this, the government of Fiji has lent the Zoo around 50 of the iguanas to be part of an SSP. Mr. Schmidt told us that the keepers who care for the iguanas are like ambassadors representing the United States, and the level of care given to the banded iguanas will determine Fiji’s impression of the San Diego Zoo.

It was very surprising to learn how much more there is to conservation than just the animals and their habitat. There are both tough political and humanitarian issues involved whenever it comes to helping protect an animal or its environment. A large part of the way to conservation is talking to and dealing with people to try to determine a method for conservation that both benefits the animal or habitat and also the humans in the area. The Zoo works closely with the U.S. government in many conservation issues, particularly with the U.S. Fish and Wildlife Service.
Towards the end of our visit with Mr. Schmidt and the reptiles, we went outside and saw the massive Galapagos tortoises. These huge tortoises can live to be over 150 years old! It was very strange to think that these specific animals have been alive for a century before any of us interns were even born. The tortoises at the Zoo receive glucosamine supplements for arthritis, which is understandable for animals who are 150 years old and weigh about 400 pounds (180 kilograms). We rubbed the head and neck of one of the friendlier tortoises, a female named Chips (here’s a profile about Chips). The skin of her head and neck was surprisingly soft for looking so dry. Meeting an animal that could have been alive when Theodore Roosevelt was born (an original American conservationist, he established the National Park System), or when Darwin first published his The Origin of Species was a great way drive home the conservation message of this Zoo InternQuest session.
- A.J., Zoo InternQuest, Conservation Team