Now Playing: Cheetah welcomes 8 cubs at St. Louis Zoo
Now Playing: Dog Helps Raise 5 Cheetah Cubs After Mom Dies
Now Playing: Russia to expel 60 US diplomats in retaliation for response to spy poisoning
Now Playing: Coalition members killed in Syria
Now Playing: Massive fire at Venezuelan police detention center kills at least 68
Now Playing: 18-year-old wins $1K per week for life
Now Playing: US strike kills high-ranking al-Qaeda member
Now Playing: Cheetah jumps into car on safari trip
Now Playing: North Korea and China confirming reports of meeting in Beijing
Now Playing: Parisians march to protest murder of Holocaust survivor
Now Playing: Vladimir Putin: In a minute
Now Playing: Kim Jong Un visits China in historic first
Now Playing: ‘Ring bearer owl’ attacks best man at wedding
Now Playing: Wife carries sick husband to vote in Egypt’s presidential election
Now Playing: ‘This siege has us stuck’: Family tries to survive in war-torn Yemen
Now Playing: Chinese space station debris could land in US
Now Playing: Water heater gas leak likely killed family: Official
Now Playing: North Korean dictator may have visited China
Now Playing: At least 64 dead after devastating fire in Siberian mall
Now Playing: American family of four dies of toxic gas in Mexico
