From Wikipedia
Domestication
In Sweden it was a popular idea among some kings to domesticate moose to form a moose cavalry, especially during the 17th century. The idea was however deemed impossible and were abandoned.
Domestication of moose was investigated in the Soviet Union before World War Two. Early experiments were inconclusive, but with the creation of a moose farm at Pechora-Ilych Nature Reserve in 1949 a small-scale moose domestication program was started, involving attempts at selective breeding of animals based on their behavioral characteristics. Since 1963, the program has continued at Kostroma Moose Farm, which had a herd of 33 tame moose as of 2003. Although at this stage the farm is not expected to be a profit-making enterprise, it obtains some income from the sale of moose milk and from visiting tour groups. Its main value, however, is seen in the opportunities it offers for the research in the physiology and behavior of the moose, as well as in the insights it provides into the general principles of animal domestication.