More than 30 cats discovered inside filthy Quebec City home

Animal welfare officers spent the day Wednesday waiting for the go-ahead to enter a rank and squalid home in Quebec City, to rescue about 30 cats.

The rescue mission came after police were called to the home in Quebec City's Charlesbourgh neighbourhood Tuesday night to respond to a problem with an alarm system.

When they showed up, they found a filthyhouse withmore than two dozencats inside, and the floors covered in urine and excrement.

"The levels [of ammonia] are way above what is considered acceptable in a residential environment high enough to pose a health hazard," said Jean-Franois Daigle, spokesman for the Quebec City fire department.

An acceptable level of ammonia is 1.7 parts per million (ppm). Ammonia levels in the home were registered at 240 ppm. A level of 300 ppm can be fatal.

Firefighters had to wear breathing masks and protective suits to inspect the premises.

Animal protection services had to wait nearly a daybefore carrying out their rescue operation. They had to firstair the house out and to obtainthe proper protective gear to be able to go inside.

The man and woman living in the home were sent to hospital for a check-up.