One strain of dog flu causing outbreaks in the U.S. appears to be especially contagious, making it likely more dogs than usual will get sick, veterinarians say. Still, 90 percent of cases are mild.
Scientists need curiosity, determination — and luck. We're especially interested in that last bit, so tell us your stories of mistakes and surprises that led to discoveries in the past few years.
When the gloomy octopus of Australia turns dark and towers threateningly over his neighbor, he's likely signaling aggression, scientists now say. Neighbors get the message — they turn pale and flee.
The spread of Zika is probably limited by window screens and other mosquito-control measures in common use in the U.S. Also, the primary mosquito that carries Zika has a somewhat limited range.
Passaic River polluters are telling local fishermen to trade contaminated catch for healthy tilapia. But there's no disposal plan for the toxic fish, and residents don't want them to be incinerated.
Hedgehogs are starting to disappear from the English countryside, threatened by cars, garbage and even fences. But now there's a campaign to save one of England's favorite animals.
Large-scale poultry production is ramping up in North Carolina and getting closer to residential areas. Neighbors say the smells and pollution from these farms can make it hard to breathe.
The Cincinnati Zoo euthanized the cheetah known as Sarah this week. Cheetahs usually live to 8 to 12, the zoo says. Sarah was famous for running 100 meters in 5.95 seconds, a record for land mammals.