The smallest commercially available teddy bear is only 9mm. A very small bear is called a micro bear and there are many people who make and sell them.
This is the worlds largest teddy bear. It measures 19.41 metres in length and was made by Municipio de Xonacatlán in Mexico. It is more than 215 times the size of the smallest bear and approximately the height of a 4 storey building!
Cedric the Bear 