In 2010, nine chimpanzees were moved from a Dutch safari park to a zoo in Edinburgh. The chimps in from the different locations had different languages; more specifically, they had different “referentiall calls” (calling for apples is the example given). By 2013, the Dutch chimps had learned and were in the habit of using the call that their new companons in Edinburgh used. There is also a connection between the emotional sound of the calls and the feeling of the chimps towards the object they are calling for.