There are strict rules on which endangered plants and animals may and may not be carried.
Strict rules are required to prevent many endangered plant and animal species from dying out completely. CITES (the Convention on International Trade in Endangered Species of Fauna and Flora) therefore specifies exactly which protected plants and animals may not be carried. In most cases, these may not be imported at all, or only if certain conditions are met. Violators are rigorously prosecuted and usually sentenced to severe penalties.
Detailed information is available at www.artenschutz-online.de