
Who can resist the charm of tiny mammals? From piglets and kittens to human infants, mammals are often seen as the epitome of cuteness. While they may use teeth and claws in defense, they don’t typically possess venomous tentacles or lethal bites—or do they?
Surprisingly, not all mammals are as harmless as they seem. Some come equipped with venom or toxic defenses. Let’s explore these fascinating creatures—from a safe distance, of course.
1. Skunks
Before diving into more lethal creatures, let’s start with the familiar skunk. Known for its defensive spray, it releases thiols—compounds similar to those in onions and garlic—that can cause temporary blindness, severe irritation, and even vomiting. This potent spray is also harmful to other animals, including humans.
2. Platypuses
The platypus is already an oddity for laying eggs, but males take it further with venomous spurs on their hind legs. These spurs deliver venom so intense that it causes excruciating pain, making it a formidable defense mechanism.

3. Slow Lorises
Unlike other venomous mammals, slow lorises rely on their hands to gather toxins from glands near their armpits. They then spread this venom onto their teeth, delivering a potent shock to any predator daring to attack.

4. Shrews
Certain shrew species possess venomous salivary glands that immobilize their prey. However, the venom isn’t delivered through a simple bite; the shrew must chew its target to activate the venom’s paralyzing effect.

5. Solenodons
Native to Cuba and Hispaniola, the solenodon resembles a shrew but is far more dangerous. It uses its sharp, grooved teeth to directly inject venom into its enemies, making it a unique and formidable mammal.

A 2016 study revealed that platypus venom could have potential applications in human medicine. Researchers discovered a hormone in the platypus' venom, also present in its gut, which regulates blood glucose levels. This discovery may pave the way for advancements in diabetes treatment.