no they do not grow thick fur
It is called ermine.
The ermine's fur becomes thick, long, and white, with a black tail-tip. In males, sperm developes in preparation for the spring breeding season. Ermines may also hunt more, and bury food for later consumption.
grow thick fur and grow fat
Another name for white fur is ermine.
Ermine is one of the several types weasels whose coats become become white in winter, some with a bit of black at the tip of the tail.They are found all across North America, Europe and Asia and are raised for their white pelts ... a highly valued fur piece.
Their fur can grow very long, so i think they have pretty thick fur.
No they are not, but are in the same family - The ermine or stoat (Mustela erminea) is a small mammal of the family Mustelidae. In North America it is known as the ermine or short-tailed weasel; elsewhere, "ermine" refers to the animal only when it has white fur, which it moults to in winter in snowy parts of its range. The ferret is a domestic mammal of the type Mustela putorius furo, belonging to the family Mustelidae (weasels) Source: Wikipedia
Royalty wear ermine trimmed robes, ermine is the winter fur of a stoat, which is like a weasel or ferret. The fur is white with regular black spots on it. It is a symbol of wealth and prestige, and moreover royalty.
Ermine.
Changes fur from brown to white
Ermine
Ermine