why can't i breed fire and ice in dragon city

Nidoqueen can be quite fierce and is very protective of its young. Its lower jaw, the front of its abdomen, and two plates on its chest are cream-colored. Each hand has three short claws and each foot was two claws.

There is a small horn on its forehead, a single spine on each ear, and a line of toxic spikes running down the length of its back. It has a blunt snout, narrow brown eyes, and large ears with brown insides. Its body is encased with extremely hard scales that serve as excellent protection from any attack and stand up when Nidoqueen is excited or provoked. Nidoqueen is a large, bipedal blue mammalian Pokémon with distinct reptilian features. 5.6.6 By transfer from another generation.It is related to the Nidoran♂ line, but unlike Nidoran♀, Nidoqueen cannot breed. It evolves from Nidorina when exposed to a Moon Stone. Nidoqueen ( Japanese: ニドクイン Nidoqueen) is a dual-type Poison/ Ground Pokémon introduced in Generation I.

Pokémon Brilliant Diamond and Shining Pearl.

Why can't i breed fire and ice in dragon city