Molland also writes that the first established ALF and ELF action was established on March 14, 1997, when the "Animal Liberation Front – Eco-Animal Defense Unit" claimed the spiking of 47 trees in a clearcut area, Oregon.
莫兰也写道，ALF与ELF首次已被确认的行动是在1997年3月14日，“动物解放阵线：生态-动物保卫分队”（Animal Liberation Front - Eco-Animal Defense Unit）认领了俄勒冈州一片皆伐区的47棵树被钉（spiking）事件。