Latest updated





Other interesting subjects,
use "search for..."

Wire Fox Terrier Growth Chart Ft Marinetti Zang Tumb Tumb Oryx Gtl Logo Armadillo 2 Chair X Doge Jaguar Z Line Romantic Pictures Of People In Love Owning A Whippet I Duck Nobody But Tape Horseback Riding Quotes And Sayings X Part Shrewsbury Panda Cartoon

Gallery photos and information: American Bullfrog Drawing

Wiki info

To establish social dominance within choruses, bullfrogs demonstrate various forms of aggression, especially through visual displays. Posture is a key factor in establishing social position and threatening challengers. Territorial males have inflated postures while nonterritorial males remain in the water with only their heads showing. For dominant (territorial) males, their elevated posture reveals their yellow-colored throats. When two dominant males encounter each other, they engage in a wrestling bout. The males have their venters clasped, each individual in an erect position rising to well above water level. The New Jersey study noted the males would approach each other to within a few centimeters and then tilt back their heads, displaying their brilliantly colored gular sacs. The gular is dichromatic in bullfrogs, with dominant and fitter males displaying yellow gulars. The New Jersey study also reported low posture with only the head exposed above the water surface was typical of subordinate, or nonterritorial males, and females. High posture was demonstrated by territorial males, which floated on the surface of the water with their lungs inflated, displaying their yellow gulars. Males optimize their reproductive fitness in a number of ways. Early arrival at the breeding site, prolonged breeding with continuous sexual activity throughout the season, ownership of a centrally located territory within the chorus, and successful movement between the dynamically changing choruses are all common ways for males to maintain dominant, or territorial, status within the chorus. Older males have greater success in all of these areas than younger males. Some of the males display a more inferior role, termed by many researchers as the silent male status. These silent males adopt a submissive posture, sit near resident males and make no attempt to displace them. The silent males do not attempt to intercept females but are waiting for the territories to become vacant. This has also been called the alternate or satellite male strategy.

of an American Bullfro... via image
of an American Bullfro...
Frog Coloring Page S via image
Frog Coloring Page S
Bullfrog Drawing Lesso... via image
Bullfrog Drawing Lesso...
Male American Bullfrog... via image
Male American Bullfrog...
Frog  Bullfrog  via image
Frog Bullfrog
Frog  Bullfrog  via image
Frog Bullfrog
Bullfrog and ToaColori... via image
Bullfrog and ToaColori...
American Bullfrog via image
American Bullfrog
Nervous system via image
Nervous system
Saturday  May 16  2009... via image
Saturday May 16 2009...
Indiana Department of ... via image
Indiana Department of ...
Photo Bullfrog  Lithob... via image
Photo Bullfrog Lithob...
American Bullfrog - Bl... via image
American Bullfrog - Bl...
Boreal Chorus Frog Bul... via image
Boreal Chorus Frog Bul...
adult frog drawing Rea... via image
adult frog drawing Rea...
Hang on to the drawing... via image
Hang on to the drawing...
American Bullfrog (Ran... via image
American Bullfrog (Ran...
800 x 637 gif 113kB
American Bullfrog (Ran... via image
American Bullfrog (Ran...
800 x 639 jpeg 225kB
Learn How to Draw an A... via image
Learn How to Draw an A...
800 x 566 png 77kB
How to Draw Frog from ... via image
How to Draw Frog from ...
1920 x 1080 jpeg 119kB
Bullfrog Drawing via image
Bullfrog Drawing
600 x 486 gif 17kB
Learn How to Draw an A... via image
Learn How to Draw an A...
844 x 598 png 57kB
Learn How to Draw an A... via image
Learn How to Draw an A...
844 x 598 png 67kB
an American Bullfrog P... via image
an American Bullfrog P...
800 x 800 jpeg 116kB
American Bullfrog Draw... via image
American Bullfrog Draw...
600 x 476 jpeg 58kB
Bullfrog Drawing via image
Bullfrog Drawing
600 x 423 jpeg 34kB
Learn How to Draw an A... via image
Learn How to Draw an A...
844 x 598 png 38kB
American Bullfrog colo... via image
American Bullfrog colo...
1141 x 1476 jpeg 53kB
Diagram of a Frog to P... via image
Diagram of a Frog to P...
900 x 695 jpeg 78kB
American Bullfrog Draw... via image
American Bullfrog Draw...
900 x 690 jpeg 237kB
How to Draw an America... via image
How to Draw an America...
600 x 926 png 19kB
American Bullfrog Draw... via image
American Bullfrog Draw...
900 x 675 jpeg 158kB
American Bullfrog Draw... via image
American Bullfrog Draw...
259 x 200 jpeg 17kB
American Bullfrog (Ran... via image
American Bullfrog (Ran...
560 x 490 png 85kB
Close-up Of American B... via image
Close-up Of American B...
900 x 612 jpeg 125kB
American Bullfrog Draw... via image
American Bullfrog Draw...
1024 x 768 jpeg 118kB
American Bullfrog by P... via image
American Bullfrog by P...
1024 x 768 jpeg 153kB
American Bullfrog Draw... via image
American Bullfrog Draw...
1024 x 768 jpeg 87kB
Stunning "Bullfro... via image
Stunning "Bullfro...
650 x 523 jpeg 53kB
American Bullfrog by j... via image
American Bullfrog by j...
1600 x 1164 jpeg 412kB
American Bullfrog Draw... via image
American Bullfrog Draw...
300 x 300 png 4kB
American Bullfrog Draw... via image
American Bullfrog Draw...
450 x 353 jpeg 57kB
Learn How to Draw an A... via image
Learn How to Draw an A...
844 x 598 png 16kB
American Bull Frog ori... via image
American Bull Frog ori...
570 x 412 jpeg 69kB