Chows shed their coat. This will cause excessive tearing which should be corrected by your veterinarian surgically. Chow is deep chested which makes them prone to bloat. Bloat is a condition where the stomach fills with gas causing the stomach to flip. Feeding smaller portions of food twice a day helps prevent this problem from occurring.
Daily medication can regulate the thyroid.
The Chow is catlike in attitude. They are highly intelligent, stubborn, and value their independence. Their dignity and aloofness should not be confused with a fierce or unapproachable temperament. The majority of Chows are quite sweet. People who do not understand this breed's unique nature often misunderstand the Chow's temperament.