The duck-billed platypus is a mammal that is known for eating insects. So, it seems unusual that this animal can also create venom. This poison is found near the back of their legs and is used during the mating season. A platypus does not use the venom in defense. The American short-tailed shrew contains glands of venom. They have enough venom in one shot to kill a few hundred mice.
When looking at a shrew, these dark-furred creatures actually look harmless and cuddly. However, they are quite poisonous and deadly if they attack a human or animal. If a human comes in contact with this type of shrew or the duck-billed platypus, it is necessary to seek medical attention since strong poison will be inside the person’s body.