Arachnids scuttle on the walls and ceiling in the real-life horror filmed by a mother in Sydney, Australia.
The male baboon was en route to a vasectomy procedure with two females in tow to keep him calm, authorities said.
Celebrations come amid Australia wildfires and Hong Kong protests.
A burnt Christmas tree sculpture in Sydney is serving as a poignant reminder of the damage caused by bushfires in Australia this year. Made from charred branches and household debris from the fires, including smoke alarms and a scorched bicycle, the installation aims to raise money for victims of the fires.
The “mega-blaze” is now covering more than 300,000 hectares – an area the size of greater Sydney.
Qantas, who ran the flight, said all carbon emissions from the test would be fully offset.
As fires threaten Sydney, the nation's deputy prime minister dismissed “raving inner city lunatics” over concerns that climate change could be worsening the disaster.