On Monday, Brevard County Fire Rescue accepted a donation of 174 pet oxygen masks from Invisible Fence of Florida. The masks are designed to deliver oxygen to animals such as dogs and cats, which may be suffering from smoke inhalation during a house fire. They will be distributed to all 32 Brevard County Fire Rescue stations across the county. About 40,000 pets die in the U.S. every year in house fires. Invisible Fence has been involved in the pet mask program since 2006.