“There are some frogs that you have to simulate rain for or they won’t come out and breed,” Wiese said. “Other frogs, they just need to hear the sound of rain and the sound of lightening and thunder. That’s what sets off their hormones.”
Around since the 1980s in paperback form, most of today’s studbooks are in computerized databases. Basic information such as family tree, medical history, age and weight are entered by studbook keepers, then sent to a central location where the data is analyzed and converted into a “master plan” for breeding.
But the databases have their limitations. They aren’t updated quickly and don’t include the extra information from the dog-eared husbandry manuals on setting the optimal conditions for an animal’s breeding. Read more