The Independent on MSN3 个月
This ancient giant tadpole will change what we know about frogs
Researchers know frogs were hopping around as far back as 217 million years ago. But exactly how and when they evolved to ...
Center for Biological Diversity8 年
SAVING THE OREGON SPOTTED FROG
The frog is also threatened by introduced species: Bullfrogs and green frogs compete with Oregon spotted frogs for food, while fish introduced for sport fishing may also compete for prey — or prey on ...
Center for Biological Diversity8 年
SAVING THE OREGON SPOTTED FROG
The frog is also threatened by introduced species: Bullfrogs and green frogs compete with Oregon spotted frogs for food, while fish introduced for sport fishing may also compete for prey — or prey on ...