Final answer:
Mammals such as foxes exhale visible breath in winter due to condensation of moisture in their breath. The arctic fox has adaptations, including a thicker fur, to cope with this cold environment. Amphibians and birds have different respiratory mechanisms compared to mammals.
Step-by-step explanation:
In winter, mammals such as foxes exhale visible breath when they breathe due to the cold air, causing moisture contained in their breath to condense into a misty vapor. When it comes to the processes involving inhalation, mammals have a sophisticated pulmonary system. Mammals, including the arctic fox, take air in through their nasal cavity, which warms and humidifies the air. The process of warming and humidifying is important for protecting the internal respiratory structures from the damage that cold and dry air could cause.
Amphibians like frogs have a different inhalation technique where air is collected in a pouch and then muscles contract to force the air into their lungs. Birds have yet another respiration system that involves unidirectional airflow through their lungs. Breath condensation is more visible in mammals during colder conditions because the air is colder and can't hold as much water vapor, leading to condensation when it meets a mammal's warm exhaled breath.