petting zoo

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A collection of farm animals, such as goats, ducks, and sheep, and sometimes docile wild animals such as turtles or deer, for children to feed and pet.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A zoo that permits or encourages visitors to touch animals.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a collection of docile animals for children to pet and feed