Why does my white dog's fur turn brown?
Causes. A dog's tears contain trace amounts of iron.
When a dog drools or cleans his eyes with tears, the liquid sticks to the fur.
Similarly, a dog that drinks water high in iron can leave rusty streaks on his mouth or on his body when he cleans himself for the same reason.
Dogs also lick because they like the taste of an owner's salty skin and out of habit.
Mostly, with domestic Dogs, it's a sign of affection.
Licking releases pleasurable endorphins which gives Dogs a feeling of comfort and pleasure — like the feeling people get when they are biting their nails — it relieves stress.
We've handpicked 21 related questions for you, similar to «Why does my white dog's fur turn brown?» so you can surely find the answer!