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Answer:
Scientists have estimated that there are 8.7 million animal species on Earth. Some of these are fierce (lions, sharks, tigers). Some are adorable (rabbits, deer, otters).
And others are, well, really weird.
Across the globe, you'll find unique animals that exhibit truly remarkable and bizarre features and behaviors. From a frog that shows off its organs to a goat that faints when scared, here are 50 unusual animals to add to your travel bucket list now.
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Halley's Comet or Comet Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 75–76 years. Halley is the only known short-period comet that is regularly visible to the naked eye from Earth, and the only naked-eye comet that can appear twice in a human lifetime. Wikipedia
Predicted next perihelion: 28 July 2061
Orbital period: 75 years
Radius: 5.5 km
Discoverer: Edmond Halley
Earth MOID: 0.0638 AU (9.54 million km)
Meteor shower spawned: Orionids, Eta Aquariids