Because they need big enough mouths to get some of those big bugs in their mouths that they eat.
Frogs have mouths, because like most living creature they need to eat to live, and they use their mouth both to eat, and to make noises that attract mates for breeding.
so the tongue will be sticky so it can catch flies
yes. their large mouths are used to swallow small fish and crayish. they are also know for eating rodents and frogs.
An Ant Eater
One of the features that helped frogs adapt to living on land is its slimy body that maintains internal temperature. It also has a big mouth for swallowing large prey and a sticky tongue for catching insects.
The giant African bullfrog or pixie frog will eat mostly insects, stuff like locusts, crickets, worms and grubs. Because of the size of these frogs when adult they will also eat large mice, and large rats, they will pretty much eat anything they can fit in there mouth. Grasshoppers will kill them or make them very ill, so if you have one in captivity do not feed them grasshoppers! Insects, small frogs, small snakes, fish. bull frogs can eat flies, fish, craw fish, worms, crawling insects, crabs, snakes, tadpoles.
By eating it.
Frogs have a large mouth because their teeth arenâ??t very good at chewing, so they need to have a big mouth to swallow things whole. Frogs also have long sticky tongues for catching insects that are hovering above the water.
Actually, although they don't look similar at all, frogs and humans do have similar anatomy. Both frogs and humans have a heart, lungs, kidneys, a stomach, a liver, small intestine, large intestine, spleen, pancreas, gall bladder, etc. Of course, the frog's anatomy is much simpler than a human being's, because frogs do not have ribs, and they also don't have a diaphragm. And while frogs have a tongue, theirs is long and sticky (good for catching flies), while the human tongue is not; frogs also have teeth, but theirs are so weak as to be almost useless. Frogs can also breathe through their skin when underwater, while humans cannot. I enclose a good link to a site about frog anatomy.
That's backwards; they got their name by having big mouths.
Many birds and large insects eat ants, but the best-known thing which eats ants is the Anteater - a mammal with a long snout and sticky tongue which it uses to get ants out of anthills.
Guppies aren't large enough to eat frogs.
No! Tree frogs are carnivorous and only eat live insects.