Zoos are permanent facilities in which animals of wild species are kept for the purpose of display for a period of at least seven days a year.

They are not considered zoos:

• Circuses,
• pet shops,
• enclosures for keeping no more than five native species of hoofed game,
• facilities in which no more than 20 animals of other wild species are kept.

The establishment, expansion, operation and significant modification of zoos require the approval of the responsible nature conservation authority. The permit is issued for certain facilities and certain operators and specifies a maximum number of animals for each individual species.