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To breath when the rest of them is underwater
The frogs' nostrils are called external, as they are visible on the outside of the frog's snout. These nostrils allow the frog to breathe air when it is on land.
nares is what they are called for baby and adult frogs
nares are nostrils. the maxillary bones form the lateral margins of external nares/nostrils
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External Nares
External nares ( Nostrils) are the openings formed by the external nose that open into the nasal cavity.
external nares
Some of the body parts that are visible on the dorsal surface of a frog include the head, trunk and limbs. Other parts are the external nares, the tympanic membrane and the anus.
Air moves in and out of the external nares, also known as the nostrils. During inhalation, air enters the respiratory system through the external nares, where it is filtered, humidified, and warmed before reaching the lungs. During exhalation, air exits the respiratory system through the same external nares.
External nares are openings in the nostrils that allow air to enter the respiratory system during breathing. They also help filter and humidify the air before it reaches the lungs. Additionally, external nares play a role in the olfaction process by allowing smell molecules to enter the nasal cavity for detection.
Because they need to be able to sense when a predator is approaching.