1. All aggressive dogs are dangerous and should be avoided.
2. Small dogs are better suited for apartment living than larger dogs.
3. All dogs naturally know how to swim.
4. Dogs are colorblind and can only see in black and white.
5. A dog's mouth is cleaner than a human's mouth.
6. Dogs are solely carnivorous and don't need vegetables in their diet.
7. Dogs wag their tails to indicate happiness.