The noun 动物园 (dòngwùyuán) means "zoo." It is a compound word made up of 动物 (animal) and 园 (garden/park). This word is used in everyday conversation when talking about visiting or referencing a zoo.
周末我们带孩子去动物园玩了。
Zhōumò wǒmen dài háizi qù dòngwùyuán wán le.
On the weekend, we took the kids to the zoo.
这个动物园里有很多珍稀动物。
Zhège dòngwùyuán lǐ yǒu hěn duō zhēnxī dòngwù.
This zoo has many rare animals.
北京动物园是很受欢迎的旅游景点。
Běijīng Dòngwùyuán shì hěn shòu huānyíng de lǚyóu jǐngdiǎn.
The Beijing Zoo is a very popular tourist attraction.