Ochres can only breed with other “drakes” which means there is a possibilty that new dragons in the future might be able to cross breed with them <3
Pygmies have different sprites for both male and female adult and stage2 hatchlings. so if you collect the different sprites, you’ll need four eggs, two to freeze and two to grow up.
MANY of the new dragons waiting to come have different sprites for the male and female, not to mention the project to change some of the current sprites to have new poses for some of the genders.