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What the sources say

Goliath FrogConraua goliath

Every figure, record and mechanism on the Goliath Frog profile was written from a source, and this is the working table behind it: 39 claims checked word for word against these sources. The left column is what the page says. The right column is the source's own words, copied, not paraphrased; a ... marks a cut and[brackets] an insertion. Open any source and check it yourself.

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Source
01

San Diego Zoo Wildlife Alliance

Goliath Frog. San Diego Zoo Wildlife Alliance.

The page saysThe largest frog in the world
The source saysthe goliath frog is the largest frog in the worldNote: tagline and body
The page sayswhere males haul rocks to build nests for their eggs
The source saysThe male builds a nest of rocks and gravel near a riverbank
The page saysRainforest rivers and waterfalls
The source saysGoliath frogs live in small ranges in the rainforests at the equator of western Africa, near swift-moving rivers and waterfalls.Note: stats.habitat
The page saysInsects, crustaceans, fish and other amphibians
The source saysAn adult goliath frog eats the same types of food that other frogs do: insects, crustaceans, fish, and other amphibians.Note: stats.diet
The page saysMales build rock and gravel nests and wrestle rivals
The source saysThe male builds a nest of rocks and gravel near a riverbank, and wrestles with other males to breed with females.Note: stats.superpower
The page saysThe male goliath frog builds a nest of rocks and gravel near a riverbank. He also wrestles other males to win the right to breed with females.
The source saysThe male builds a nest of rocks and gravel near a riverbank, and wrestles with other males to breed with females.
The page saysThe wrestling and rock moving may be why males are larger than females, which is unusual for frogs.
The source saysThe wrestling and rock moving may be why males are larger than females: this is unusual for frogs.
The page saysThen the female lays her eggs in the nest
The source saysThen the female lays thousands of eggs in the nest.Note: count cut: SDZ says thousands, ADW says several hundred; the sentence states only what both agree on
The page saysthat is where the parenting stops. The adults do not wait around to see whether the eggs hatch.
The source saysThat is where the parenting stops: they don’t even wait around to ensure the eggs hatch.
The page saysA goliath tadpole starts out the same size as the tadpole of an average frog, but it just keeps growing.
The source saysThe goliath frog tadpole is the same size as the tadpole of an average frog, but just keeps growing.
The page saysTadpoles are picky eaters and only eat a certain plant found near waterfalls and the banks of swift rivers.
The source saysGoliath frog tadpoles are picky eaters and only eat a certain plant found near waterfalls and the banks of swift rivers.
The page saysIts body is 20 to 30 centimeters long, and it stretches up to 75 centimeters when its legs are extended.
The source saysLength: 8 to 12.5 inches (20 to 30 centimeters); up to 29.5 inches (75 centimeters) with legs extendedNote: SDZ's intro says up to 12.5 inches (32 cm); the Size box (20 to 30 cm) is used
The page saysThe heaviest weigh up to 3.3 kilograms
The source sayscan weigh up to 7.2 pounds (3.3 kilograms)Note: SDZ intro; the Size box 2.7 to 3.3 kg is the top of the range
The page saysas big as some house cats
The source saysThe goliath frog is as big as some house cats!
The page saysIt can jump almost 3 meters forward.
The source saysGoliath frogs can jump almost 10 feet (3 meters) forward.
The page saysA goliath frog may live up to 15 years.
The source saysMay live up to 15 years or more in native habitatNote: "or more" dropped: Nguete 2019 says up to 15 years in captivity, ADW says lifespan is not well documented; up to 15 is what the sources share, no setting given
The page saysFor all its size, the largest frog in the world has no vocal sac.
The source saysthe goliath frog is the largest frog in the world ... goliath frogs don’t have a vocal sacNote: "mute" cut: ADW says males whistle with the mouth open; SDZ and ADW agree there is no vocal sac
The page saysThere it keeps to small patches of equatorial rainforest near swift-moving rivers and waterfalls.
The source saysGoliath frogs live in small ranges in the rainforests at the equator of western Africa, near swift-moving rivers and waterfalls.
The page saysGoliath frogs come out at night and sit on river rocks to look for food.
The source saysGoliath frogs come out at night and sit on river rocks to look for food.
The page saysOne scientist even found a bat in the stomach of a goliath frog.
The source saysBut one scientist found a bat in the stomach of a goliath frog!
The page saysHunting it is against the law, but poachers still do it to sell the meat.
The source saysEven though it is now against the law to hunt the goliath frog, poachers still do so to sell the meat.
The page saysThe frogs are also losing forest to farming, logging and human settlements, and that adds extra soil to their breeding streams.
The source saysThe large frogs are also losing their forest habitat to farming, logging, and human settlements. These activities are adding extra soil to the frogs' breeding streams.
The page saysScientists find that adult frogs weigh less than expected these days.
The source saysScientists find that the adult frogs weigh less than expected these days.
The page saysPeople hunt it for meat even though that is now illegal, and farming, logging and settlements are eating its forest. That adds soil to its breeding streams.
The source saysEven though it is now against the law to hunt the goliath frog, poachers still do so to sell the meat. The large frogs are also losing their forest habitat to farming, logging, and human settlements. These activities are adding extra soil to the frogs' breeding streams.Note: FAQ 3
The page saysThe largest frog in the world has no vocal sac
The source saysthe goliath frog is the largest frog in the world ... goliath frogs don’t have a vocal sacNote: vibe.reason, same quote as the body
The page saysthe males haul rocks and gravel to build nests
The source saysThe male builds a nest of rocks and gravel near a riverbankNote: vibe.reason, same quote as the body

Source
02

The IUCN Red List of Threatened Species 2019

Conraua goliath. The IUCN Red List of Threatened Species 2019: e.T5263A96062132.

The page saysThe IUCN Red List lists the goliath frog as Endangered.
The source saysIUCN Red List category: Endangered (EN).Note: GBIF's copy of the Red List, taxon id 5263 matches the DOI; stats.conservationStatus

Source
03

Monthe Moumegni et al. 2021

Monthe Moumegni et al. (2021). The Feeding Regime of Goliath Frog (Conraua goliath) (Boulenger, 1906) in the Equato-guinean Zone of Cameroon. Genetics and Biodiversity Journal.

The page saysA study of 65 frogs from hunters in Cameroon's Littoral region
The source saysA total of 65 frogs (22 males, 22 females and 21 unspecified frogs) were obtained from hunters in 3 localities namely: Loum, Penja, and Nlonako in the Moungo division, littoral region of Cameroon.
The page saysfound plant leaves and stems in their stomachs as well
The source saysplants leaves and steems (21.19%)
The page saysits authors called the goliath frog an omnivore
The source saysgoliath frog is an omnivore fed on a variety of preys and plants according to their availability in the environmentNote: FAQ 2 uses the same
The page saysan animal that eats both plants and animals
The source saysgoliath frog is an omnivore fed on a variety of preys and plantsNote: definition of omnivore, gloss of the source's own conclusion
The page saysResearchers who opened the stomachs of frogs from Cameroon found a mix of animal prey and leaves and stems, and concluded the species is an omnivore that eats what its surroundings offer.
The source saysThe results revealed a large diversity of preys in the stomach namely: myriapods (25%), plants leaves and steems (21.19%), insects (19.56%) ... In conclusion, goliath frog is an omnivore fed on a variety of preys and plants according to their availability in the environment.Note: FAQ 2

Source
04

Nguete Nguiffo et al. 2019

Nguete Nguiffo et al. (2019). Microfilariae infestation of goliath frogs (Conraua goliath) from Cameroon. PLOS ONE.

The page saysEquatorial Guinea and Cameroon
The source saysThe goliath frog (Conraua goliath) is endemic to Equatorial Guinea and Cameroon.
The page saysin a study of wild frogs in Cameroon, males averaged 1.49 kilograms and females 745 grams
The source saysmales were larger than females (mean weight 1489.5 g/male vs 745 g/female)Note: 1.49 kg is 1489.5 g converted; "the average frog is far lighter" follows from means under half the 3.3 kg maximum
The page saysThis frog is endemic to Equatorial Guinea and Cameroon, which means it lives nowhere else.
The source saysThe goliath frog (Conraua goliath) is endemic to Equatorial Guinea and Cameroon.Note: "means it lives nowhere else" is the definition of endemic
The page saysA separate study, also in Cameroon's Littoral region, examined blood from 78 goliath frogs and found microfilariae, a type of blood parasite, in 33 of them.
The source sayswe microscopically examined blood smears from 78 goliath frogs in February and November 2016 (dry and wet seasons) from six localities in Littoral Region of Cameroon ... Microfilariae were found in 33/78 (42.3%) goliath frogs at six locations.Note: abstract: 'impact of blood parasites'; 'No other haemoparasite species was detected'
The page saysHeavier frogs carried more of them.
The source saysthe microfilaria intensity increased with frog weight (p < 0.0001)
The page saysThe biggest weigh up to 3.3 kilograms
The source saysThe goliath frog is the largest known frog, weighing up to 3.3 kgNote: FAQ 1; the SDZ 2.7 to 3.3 kg band is the top of the range, not a typical weight (ADW: 600 to 3250 g; Nguete means below)
The page saysOne Cameroon study found wild males averaging just under 1.5 kilograms, and females about half that.
The source saysmales were larger than females (mean weight 1489.5 g/male vs 745 g/female)Note: FAQ 1; 1489.5 g is just under 1.5 kg, 745 g is half of it

How the table was made: a writer drafted the profile from these sources and logged each claim with its quote, a reviewer with nothing but this table checked every sentence said no more than its quote, and a script confirmed each quote appears word for word in the source. The method is in the site'sAbout page.