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common name of the largest North American frog, Rana catesbeiana. Native to the E United States, this species has been successfully introduced in the West and in other parts of the world. The body length is 4 to 8 in. (10–20 cm), and the legs may be up to 10 in. (25 cm) long. An aquatic form with fully webbed toes, the bullfrog can close its nostrils and lie at the bottom of a pond for some time. Males have a loud, booming call. Bullfrog tadpoles require two or three years to become adults. The bullfrog is the only frog whose legs are marketed in quantity for food in the United States. Several other large frogs of the genus Rana are called bullfrogs in other regions. Bullfrogs are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Amphibia, order Anura, family Ranidae.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(Rana catesbiana), one of the largest representatives of the genus Rana of the family Ranidae. Length, up to 20 cm; weight, up to 600 g. The back is olive brown with indistinct dark brown spots.

The bullfrog is widely distributed in North America, where it lives in thickets along rivers. It feeds on invertebrates, small fish, frogs, and small mammals; it preys on the nestlings of domesticated ducks. The males make a bellowing noise that sounds like a bull (hence the name). The tadpoles develop for two years. Bullfrogs have commercial value as food and are bred on farms. They have been introduced into some South American countries and Japan.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


(mining engineering)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


any of various large frogs, such as Rana catesbeiana (American bullfrog), having a loud deep croak
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
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Taylor explained that Chattem took Bull Frog Surfer Gel off the market several years ago, and yet, there are still thousands of requests for it every year.
"What attracted us was that Bull Frog was complementary to our portfolio," says Taylor.
US sun protection and skin care products maker Sun & Skin Care Research LLC said it had acquired the Bull Frog sunscreen brand from domestic over-the-counter healthcare products manufacturer Chattem Inc for an undisclosed sum.
Boone also touts Bull Frog's moisture-resistant storage cases that are guaranteed to keep moisture and corrosives out for up to two years.
To better understand what VpCI means in practice let's look at the Bull Frog Rust Blocker Cup and compare it with the common silica gel dehumidifier often used in gun safes and cabinets.
A: Bull Moose B: Bull Dog C: Bull Elephant D: Bull Frog. The correct answer was A: Bull Moose.
Stamp sets include, Aquatic Stamps, Leaf Stamps, Tropical Fish, Bull Frog and Lizard set.
From South America comes the Leptodactilus ocellatus: from Asia the Rana tigrina (Indian bull frog) and the hexadactyla frog.
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A giant African bull frog sits on a scale during the annual weigh-in at London Zoo yesterday
"Bull Frog is an iconic brand that we believe will respond positively to our laser focus on the sun care category and OUT commitment to growing brands through innovation, advertising and best-in-class retail ser ice," says Steve Taylor, chief executive officer of Sun & Skin Care Research.