How to identify Labrador puppies

How to identify Labrador puppies? First of all, Labrador puppies generally have a small bulge on the top of their heads (which will disappear when they grow up). The mouth should not be slender, but short and thick; the ears are droopy. Pull the ears gently. It is best if it is pointed and can touch the corner of the eye on the other side; the parts excluding the head and tail should be in a square proportion; the coat colors are only black, yellow (dark yellow, light yellow), and chocolate, and other colors are disqualified or impure; Black Labradors are generally all black. Some dogs with white hair on their chests are disqualified, but they are not impure. The tail should preferably reach the hocks of the hind legs.​