The metatarsal knob (you probably mean) is already developed in young frogs.
You can tell if a frog is a male or a female by the size of it's thumb. Male frogs have larger thumbs.
the male frog has a black dot on their thumbs so they have thumbs
The sex of a wood frog can only be reliably determined based on external morphology shortly before, during or after the breeding season. Male wood frogs have enlarged thumbs. they will also hava a dark patch on their thumbs to 'grip' females during mating. Female wood frogs do not have these enlarged thumbs. Additionally, female wood frogs tend to be larger than male wood frogs, but this is not true for all individuals.
Yes there are male and female frogs. And there are male/female hermaphrodite frogs.
Frogs do not have opposable thumbs. Among the few animals who do are: ferrets, apes/monkeys, raccoons, lemurs.
male frogs will croak to attract female frogs.
the eggs will grow until they are big full grow frogs!
the male frogs have in gujrati 'swarkothli'
Yes, in spring when there are no female frogs, male frogs turn themselves into female to breed.
Boy frogs have a black, feltlike substance on the inside of their front legs. Girl frogs do not have the black substance, but have a triangle, almost like a tail in between their back legs. Male frogs have enlarged "thumbs" on their front feet. These are grippers used to grasp the female during mating.Females are larger and makes also have almost like a 6th toe on their back feet. It's for holding onto the females during mating.The females are big but the males croakThe ears, or tympanic membrane (the circle "thingy" right behind the eyes) in males is larger than his eye. In females, the tympanic membrane is smaller than the eye.There is no easy rule to determine whether a frog is male or female. In some species the male is larger; in other species the female is larger. In many species, only the male makes the sound. Males are always the ones with the sac beneath their throat that inflates as they make their sounds.The way to tell the difference between a male frog and a female frog varies between species. For instance, in some frogs (like wood frogs), Males have enlarged, dark, rough pads on their thumbs that they used to grasp female frogs. Females do not have these patches on their thumbs. In other species of frog, the differences may be more subtle. For instance, male pacific chorus frogs have darkened, loose skin around their throats to allow the skin to expand when they call. Females have plain white skin.Often, many of these differences between male and female frogs only appear during the breeding season.
No, there are female frogs and male frogs.
Frogs reproduce through a process called amplexus, where the male frog grasps the female frog from behind. The female releases eggs while the male fertilizes them externally. The fertilized eggs develop into tadpoles, which eventually grow into adult frogs.