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— Eat hot foods and drink warm beverages, but avoid caffeine and alcohol because they can make you dehydrated.— Know the warning signs of hypothermia: Confusion, shivering, difficultly speaking, sleepiness and stiff muscles.

— Check on relatives, friends and neighbors.Our furry friends should be top of mind in extremely cold weather, experts say, as they can suffer health affects just like humans.People should never leave their pets outside in the cold for extended periods, and when they do go outside, make sure they can get back indoors as quickly as possible, says Peter Rogers, a meteorologist at the National Weather Service office in Sioux Falls, South Dakota.

Newborn puppies, small dogs, senior dogs and breeds with short hair are particularly vulnerable to hypothermia, according to the American Kennel Club. Warning signs of hypothermia in dogs include rapid breathing, followed by slower and shallower breaths; sluggishness and delayed reflexes. Curling up for warmth or shivering are among the first signs their owners might notice.Also, make sure your pet is dry before taking them outdoors. Wetness or dampness in their fur will put them more at risk, the organization warns.

Open cabinets in bathrooms and in the kitchen to allow warm air to reach pipes, the weather service advises.

The agency also recommends insulating exposed pipes if possible, disconnecting outside hoses and turning off water to sprinklers.Police said in a statement that floodwaters left two men and one woman stranded at the Gozalandia River, a popular recreational spot in the western town of San Sebastián.

One of the men, who lives in Milwaukee, was swept away by the current but was rescued, police said. The other two tourists live in Washington.Flood advisories and flash flood warnings were in place for several cities and towns across the island on Friday.

Heavy rains began falling across Puerto Rico a week ago and are forecast to continue for several more days. They have unleashed landslides while floodwaters have knocked down trees and cut off access to dozens of roads.On Monday, a man who tried to drive his car through floodwaters