Bonzer and Quigley got Cassie Moore through the night.

After days without power in the Houston suburb of Jersey Village, the 35-year-old writer and educator could see her breath in the house. Her plants were dying. So Moore and her husband built a tent with living-room curtains in front of their gas fireplace. They slept in shifts Tuesday night — with their two Australian shepherds sharing their body heat.

"It’s not the safest option, but it was between that and sitting in the car and freezing,” Moore said. "You’re really relying on yourself. Every single person I talk to is in survival mode.”