1. Northern Leopard Frogs

2. Why Study Frogs?
Frogs are important to research and medical laboratories because their skeletal, muscular, digestive, nervous, and other systems are similar to those of higher animals. So, if you see a leopard frog don't think of its as just a common frog, think of it as one of nature's representatives.

3. NORTHERN LEOPARD FROG One of the most commonly dissected frogs
widely collected for the food industry
Females are larger than males
brown to green with three rows of irregularly arranged black spots.
spots are usually outlined in a cream colored border.
Although the dorsal surface of this frog is very colorful, the belly and undersides of the legs are pale white.

4. WHAT DOES THE NORTHERN LEOPARD FROG EAT?
       
WHAT DOES THE NORTHERN LEOPARD FROG EAT?
insects, earthworms, other frogs, snails, spiders, and other small animals.
can even eat small mice and fish! Their favorite time to hunt is in overcast, rainy conditions.

5. Leopard Frog Habitat
Most leopard frogs are found in clean groundwater near lightly wooded areas with significant vegetation.

6. Where Are Leopard Frogs Found?
Leopard Frogs are found in all provinces of Canada and within the United States. Declines in northern leopard frog populations were first noticed in the early 1970s.

7. Differences Between Frog & Human Digestive Systems
Short gullet instead of esophagus
Undigested food goes into cloaca and out the anus

8. Circulatory System Differences
Heart has 3 chambers in a frog
2 atria and 1 ventricle

9. Excretory System Differences
Most carbon dioxide leaves through the skin, not the mouth
Urine goes from bladder to cloaca and out the anus

10. Respiratory System Differences
Do not have a diaphragm
Moves air into lungs by swallowing air 10

11. Reproductive System Differences
Male frog – testes and oviducts
Female frog – ovaries and oviducts
Oviducts transport sperm & eggs to the cloaca and out the anus

12. Placing Frog on Tray 12

13. Exposing The Organs 1 13

14. Exposing the Organs 2 14

15. Liver and gall bladder 15

16. Heart 16

17. Lungs 17

18. Kidneys 18