The unlikely hidden danger lurking in a Queensland boy's water bottle

A Queensland mother has been left stunned after a snake fell out of her son's water bottle as she emptied it in the sink.

Snake Catchers Brisbane posted a photo of the small carpet python on Thursday curled up in a sink at the Ashgrove home.

"She got quite a shock when she emptied her son's water bottle and this yearling fell out of the bottle!" Snake Catchers wrote on Facebook.

The group were called to remove the python and said it was not harmed in the ordeal.

Many Queensland residents said they would now be checking their children's water bottles for intruders.

Snake Catchers has warned locals of an increase in snakes, saying they have received a large number of calls to removes snakes in Brisbane, Logan, Ipswich and the Gold Coast in September.

"Carpet pythons are the most obvious at this time with males actively seeking out females," the report said.

"This results in a higher probability of sightings and lucky residents may even witness male/male combat at this time of year."

Recent significant catches by the group include an 11 kilogram snake from a roof in Sunnybank and a 1.5 metre red-bellied black snake from a rumpus room in Logan.

"[We] expect to see more of these as males get more active into the month of October," they said.