Salamander Gift Delivery
It's not only insects that produce spermatophores. So do many salamanders. Sometimes females eat them while mating (above); at other times they're left at the bottom of vernal pools, where they're an easy-to-spot sign of salamander activity, for females to pick up later.
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Image: 1) Lynne Houck/Oregon State University 2) New York Department of Environmental Conservation
