Caudata.org - A discussion on the ethics of culling axolotl offspring. An older, but still interesting thread.
Code of Ethics
Jun 27, 2012
by Contributing Editor
Dendroboard - An older but still relevant thread on what rules dart frog breeders and keepers should strive to hold themselves to; an important reminder with all the recent probable smuggled dart frogs arriving in the hobby.@ Dendroboard