The term 'THICK-COATED DOG' can be summarized by two crossword solutions: SPITZ (5 letters) and CHOW (4 letters). A Spitz is a type of dog characterized by its thick double coat, pointed ears, and curled tail. Common breeds of Spitz include the Akita, Alaskan Malamute, and Samoyed. The CHOW Chow is another breed of dog known for its thick coat, which is usually red, black, blue, or cinnamon. It is also known for its distinctive scowl and curled tail.