#4 Because their eyes are so prominent, pugs are prone to eye damage.
#5 Pugs are greedy eaters and will overeat if given the opportunity.
Because they gain weight quickly, they can easily become overweight unless their eating habits are monitored.
#6 Pugs need constant human company.
If you own a pug, assume that he will follow you around the house, want to sit on your lap, and sleep in your bed with you.