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Have invasive species caused any extinctions?
science.howstuffworks.com/environmental/green-science/have-invasive-species-caused-extinctions.htm
Introducing a new species into an ecosystem can have unforeseen and disastrous consequences for the species that already live there.
10 of the Most Endangered Fish Species in Our Oceans
animals.howstuffworks.com/endangered-species/top-10-most-endangered-fish.htm
So what if one of these endangered fish ends up on your hook? The best policy is to release them back into the water, but not before making a few observations.
The Black Rhino, aka Hook-lipped Rhinoceros
animals.howstuffworks.com/endangered-species/black-rhino.htm
The black rhino is one of the rarest animals on the African continent — but it wasn't always. At the beginning of the 20th century, there may have been a million black rhinos across Africa.
What If All the Coral Reefs Disappeared?
science.howstuffworks.com/science-vs-myth/what-if/what-if-all-coral-reefs-disappeared.htm
Coral reefs are pretty cool. More than just snorkeling destinations, they shelter tons of marine life — creatures many of us depend on for food and medicine. So what would happen if the coral reefs disappeared? Here's a hint: It isn't good.
Meet the Ocelot: The Cutest Little Big Cat
animals.howstuffworks.com/mammals/ocelot.htm
Ocelots were once hunted for their beautiful fur, but are now protected. HowStuffWorks gets to know these beautiful cats.
Lawns to Legumes: Minnesota Pays Homeowners to Plant 'Bee Lawns'
science.howstuffworks.com/environmental/conservation/issues/bee-lawns.htm
The rusty patched bumblebee (Bombus affinis) is on the verge of extinction and the state of Minnesota is doing something about it.
Jackals: Canine Survivors and Tricksters of Folklore
animals.howstuffworks.com/mammals/jackals.htm
Jackals are adaptable and wily, survivalists to the core. HowStuffWorks looks at these formidable canines.
Is the Mexican grizzly bear extinct?
animals.howstuffworks.com/extinct-animals/is-mexican-grizzly-bear-extinct.htm
The Mexican grizzly bear is presumed extinct, and the reason for its demise is pretty unfortunate. Learn more about its extinction at HowStuffWorks.
Bluefin Tuna: Tasty Meal or Endangered Species?
animals.howstuffworks.com/endangered-species/bluefin-tuna.htm
You may have heard of bluefin tuna as a premium sushi ingredient. It's also at risk of extinction due to overfishing.
Pangolin: The Endangered Species With a Misleading Nickname
animals.howstuffworks.com/endangered-species/pangolin.htm
This "scaly anteater" is one of the most trafficked mammals in the world. Learn more about the pangolin, from its diet to illegal trade and what's being done to protect pangolin species today.