sentences:  At the beginning of the twentieth century, zoos acquired many animals that were caught in the wild.Today however zoos acquire animals much more frequently through their ex-situ breeding programs, trade or exchange (or loans and gifts) among zoos (often following the advice of the appropriate Species Co-ordinators).Zoos make sure that institutions receiving their animals have appropriate facilities to hold them and skilled staff that are capable of maintaining the same high standard of husbandry and welfare as they themselves.