The Maltese is a breed of small dog. The dogs are considered by the American kennel association as being a toy breed, because they are all so small. There is a group of them that have been bred to stay even small than most, and those are called teacup Maltese because they are so small they can fit in a teacup. These dogs are fragile and need extra care in making sure they don't get hurt. The cost depends on where you get the dog and whether it has champion lineage, but usually they run around $1,000, and can go up to $10,000.