The one thing about species that most people probably remember from high school science class is that when it comes to sex, they generally stick to their own kind. Hybrids happen, but they are usually thought to be accidental, and the results typically have drawbacks—think of how a horse crossed with a donkey results in a sterile mule.
Click here for original story, Female toads seek a good man—even if he’s another species
Source: Phys.org