Because Physics
pinnae in pigs are simply the ears.
Nares - nostrils, Pinnae - ears.
All birds have ears, none have pinnae, though some have pinnae-like head adornments.
shafts Barbules and pinnae are connected at the shafts of the feathers. This is on a bird.
pinnae
pinnae
Depends on the mammal. Diet can be influenced by location/living area of mammal. Humans can alter their diet themselves by choice. Other mammals don't always have this option. Good question, but like many others too broad. kapm
The Pinnae plant, also known as Adiantum, is a type of delicate and feathery fern with distinctive fronds that are often used in ornamental gardening. It is prized for its elegant appearance and is commonly grown as a houseplant in temperate climates. The Pinnae plant requires indirect light, high humidity, and consistently moist soil to thrive.
The Pinna/Pinnae collects the sound waves.
The external fold of the fetal pig ear is known as the pinna or auricle. It's most commonly referred to simply as the "outer ear".
The root word "platy" means flat or broad. It is commonly used in various scientific terms related to flat or broad structures, such as "platypus" (a flat-footed mammal) or "platysma" (a broad muscle in the neck).
Your pinnae do not funnel sounds into your ear canal from that direction.