Rattlesnakes can bite after death.

14 Fun Facts About Frightening Animals

From snakes that eat their prey alive to primates that inject their peers with flesh-rotting venom, these are the scariest deeds committed by critters

Halloween can be a particularly challenging time for families navigating life-threatening food allergies.

Allergic Reactions to Peanuts and Tree Nuts Spike 85 Percent on Halloween

Parents and children can avoid the dangers by taking key precautions and embracing alternative activities

The ogre-faced spider earns its name from its large eyes and mandibles.

How Ultra-Sensitive Hearing Allows Spiders to Cast a Net on Unsuspecting Prey

Sounds trigger the ogre-faced spider to backflip and shoot a silk trap on other insects

Sea turtle eggs, rumored to have aphrodisiac properties, are frequently poached from Costa Rican beaches

3-D Printed Sea Turtle Eggs Reveal Poaching Routes

Scientists put GPS locators inside plastic eggs to find trafficking destinations in Costa Rica

No longer masked by city noise, San Francisco sparrows are singing a new tune

The Pandemic Shutdown in San Francisco Had Sparrows Singing Sexier Tunes

Birds adapted to singing above the urban noise chirped lower, softer melodies

Some exhibitions, galleries, interactives, theaters or indoor spaces may be closed or operating at limited capacity, but the Kogod Courtyard at Smithsonian American Art Museum and the National Portrait Gallery is always a pleasant place to relax.

Here's What's New to Explore as Smithsonian Museums Reopen

Two more museums, the National Museum of American History and the National Museum of the American Indian, open Friday

A child sleeps in his parents bed.

Researchers Say the Purpose of Sleep Shifts During the 'Terrible Twos'

A multidisciplinary team offers up an exact age when REM sleep decreases

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