Matti has had following breeds: Samoyed, Bernese Mountain Dog, Finnish Lapponian Dog, Boston Terrier, Lhasa Apso and Long-haired Miniature Dachshund. He got his first dog in 1978 and first litter under prefix Kuuran was born in 1980. Tuominen has bred Samoyeds and Long-haired Miniature Dachshunds with great success achieving many champions and Winner-titles. He has been awarded Vuolasvirta-prize, the highest
the highest merit of the Finnish Kennel Club for merited breeding of Samoyeds and Long-haired Miniature Dachshunds. In all breeds owned or bred by Matti there are champions. He became judge in 1990 and has been judging in many European countries, Australia, Japan and Canada. He is qualified to judge all breeds in FCI groups 4, 5, 8 and 10 and many breeds in groups 1, 2, 6 and 9.