Yes, there are specific legal restrictions on owning and possessing certain species, particularly those deemed endangered or protected under national or international laws. These restrictions are in place to promote conservation and prevent illegal wildlife trade. The specific laws vary across countries, but they are often based on international conventions and agreements. Examples of protected species include certain types of exotic animals like big cats, primates, certain bird species, reptiles, specific marine mammals, and certain plants or trees. Ownership or possession of these species may require permits, licenses, or other authorizations, and in some cases, ownership may be completely prohibited. It is essential to research and adhere to the laws and regulations of your specific jurisdiction before owning or possessing any potentially restricted species.