Marvin's
Links
My frog
animation
Done
in iMovie and ImageReady
630kb
Learn
about frogs at the
Exploratorium
website
All
about frogs
Argus
Reed Frog
Marvin
makes a different sound
from the one on this website
USGS
Pacific
Treefrog
Identifying
Amphibians
in U.S.
& Canada
Tyrone
B.
Hayes
Associate Professor
Developemental endocrinology
in amphibians
UCBerkeley
