'Winter acclimatization' in cold-zone mammals can include

Here are some basics of animal form and function: Body plan: An animal's size and shape are fundamental aspects of form and function that significantly affect the way an animal interacts with its environment. These features are often called “body plans” or “designs”. Diffusion: Diffusion is one of the most vital processes in living beings. It helps in the movement of wastes from our bodies and transfers food within our bodies. Tissues: Tissue is a type of biological structure of greater complexity than cells but lesser complexity than organs. Similar cells combine with chemicals called an... Show more

Here are some basics of animal form and function:
Body plan: An animal's size and shape are fundamental aspects of form and function that significantly affect the way an animal interacts with its environment. These features are often called “body plans” or “designs”.
Diffusion: Diffusion is one of the most vital processes in living beings. It helps in the movement of wastes from our bodies and transfers food within our bodies.
Tissues: Tissue is a type of biological structure of greater complexity than cells but lesser complexity than organs. Similar cells combine with chemicals called an extracellular matrix (ECM) to form tissues, and tissues combine to form organs.
Basal metabolic rate (BMR): BMR is the minimum energy expenditure by an endothermic animal at rest. This includes basic functions such as breathing, blood circulation, thermoregulation, and neural activity.
Endotherm: If an animal can conserve that heat and maintain a relatively constant body temperature, it is classified as a warm-blooded animal and called an endotherm.
Organ: A body part that performs special functions is called an organ. In animals, organs are responsible for the basic bodily processes necessary to maintain life.

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