It is not capitalized, like any other (non-proper) noun; unless it is the name of a person, company, etc., "panda" remains lowercase.
Panther, python and polar bear are wild animals. They begin with the letter p.
porcupine polar bear
· panda · polar bear · Pentaceratops · Pteranodon
No, "polar" should not be capitalized when used in the middle of a sentence. It should only be capitalized if it is the first word of a sentence or part of a proper noun.
platypus, polar bear, porcupine...
P-F is Polar
Ursus is the genus of the polar bear.
P-F is Polar
Yes, "Polar Bears" should be capitalized as it is a proper noun referring to a specific species of bear found in the Arctic region.
fish or other polar animals
Yes, the "P" in "Student Council President" should be capitalized as it is part of a title.