The most rares is derker whale
The world's rarest dog breed is the New Guinea Singing Dog.
Sumatran rabbit
Havana Brown.
Ndabezinhle Phiri
the rarest fish is the super sized golden trout/salmon cross breed
the germish spotted dear rabbit
Spirm whale.
they breed by breeding with their mums mouth
the rarest breed anania bolanase
Chinook...There were 11 left in the world then in 1981 they were able to save the breed from thoes 11 dogs.
New Guinea Singing Dog.
The rarest wild breed is the volcano rabbit. It only lives in Mexico and it is threatened because of habitat degrations and target shooting. The rarest domestic breed is the Britiannia Petite. They are very hard to breed so there are not that many living.