When a young chimpanzee is over a year old, it may even ask to be tickled! To do this, it stretches his arms backwards, over the shoulders, and sticks its tummy forward.Ī newborn chimpanzee (younger than 3 months) is carried by its mother all the time. If two friends keep smiling and showing a play face, the party can go on for a very long time.ĭid you know that this play face and laughter often first appears when a chimpanzee is only 2 to 3 months old, when they get tickled as a baby by the mother? They are especially sensitive under the arms, on the belly and in their sides. It sounds like laughter! By putting on their play face, chimpanzees shows that they want to play or that they certainly don’t feel like stopping playing yet. This sound is almost exclusively made when they are playing. They produce soft, short panting sounds (hee-hee-hee). This is their play face which means they are having fun. They let their mouths hang wide open, without showing the teeth. To clearly see the difference between fighting and playing, Jane observed their faces. Who doesn’t like to play? Even the youngest chimpanzees can’t resist a game! But how could Jane distinguish between playing and fighting? Chimpanzees kick and hit each other, head-butt and throw things, both during play and fight. On its head, it grows sideways rather than backwards, as it does in the chimpanzee. The bonobo’s fur is longer and also grows on its cheeks.A chimpanzee looks somewhat more muscular than the bonobo, which has a slimmer appearance.The head of a bonobo is smaller and rounder than that of a chimpanzee.Even as they grow, the face of a chimpanzee generally remains lighter in color than that of the bonobo, which remains dark. The face of young chimpanzees is pink in color, while that of young bonobos is always black.Bonobos keep this all their lives, while chimpanzees lose it as they become adult. Both species have a tail tuft when they are young.Adult chimpanzees have a white beard, which is not the case with bonobos.How can you tell the difference? Here are some tips:
![buff chimpanzee buff chimpanzee](https://c2.staticflickr.com/4/3063/2970508105_b728bd8e36.jpg)
![buff chimpanzee buff chimpanzee](https://www.cookiesandclogs.com/wp-content/uploads/2015/04/la-zoo-monkeys-02.jpg)
They are about the same size, both have black fur, arms that are longer than their legs, and neither of them has a tail. Chimpanzees and bonobos are very similar to each other.