Native SpeciesBull frog

Rana catesbeiana
FOUND by fish3
2013-09-30
Portland
ID Confirmed
Quality checked by Fish3
Peer reviewed by Lisa
Field Notes
We went on a field trip to the Evergreen Cemetery ponds to bring pond organisms back to our science class to study. It was cold and cloudy. We used nets, buckets and specimen containers. We found many organisms but our focus is bullfrogs.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
The bullfrog's dorso-lateral folds travel past it's tympanum to it's arm whereas the green frog's folds are parallel down it's back. That is why we think that it is a bullfrog.
Photo of my evidence.
The bullfrog has four fingers that are not webbed in the front and has webbed feet with five toes that are in the back.
Photo of my evidence.
The Bull Frog is around five centimeters long from it's head to it's feet. Clearly it is a young bullfrog, not an adult because it is smaller. It has a thin torso, long gray/green legs and small dark bumps on it's back.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Rana catesbeiana
Common name:
Bull frog
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
Latitude: 
N 43.683575 °
Longitude: 
W -70.304716 °
Observation Site Information
A photo of our study site.
Habitat: 
Freshwater - In a pond or lake
Trip Information
Name:
Evergreen Cemetery Pond 6-3
Trip date: 
Mon, 2013-09-30 09:00
Town or city: 
Portland
Type of investigation: 
Species Survey
Ecosystem: 
Freshwater
Watershed: 
Presumpscot
MIDAS Code: 

Comments

I really LOVE your picture of the measurement!

I like all your pictures and all of your comments.

Your photographs of this frog are great! How did you get the pictures so accurate? That one ruler is matched up perfectly. I also like that the evidence is shown in the pictures. Well done!
From: Wes and Fred Johnson!

Nice drawings and photos of the recently metamorphosed bullfrog! In case you were interested, herpetologists (biologists who study amphibians and reptiles) often record the length of animals using a measure called the snout-vent length (SVL for short). In frogs and toads, this is the length from the end of the nose to the end of the body where the back legs come together. In salamanders, this measure would be from the nose to the base of the tail.

Great work!