Trying a bigger needle
Charles gently placed the needle on the monkey’s skin. He didn’t want to hurt the young animal because he had just been born. However, even this needle broke right immediately. This was quite strange because this needle is even used for large gorillas. How can this be happening?

Trying A Bigger Needle
Using a knife
The needles did not work, so Charles decided to use a larger tool, a knife. He intended to make a little cut in the monkey and then extract the blood. It took some effort, but Charles was able to obtain blood samples from the young monkey. Now they had to wait for the results.

Using A Knife