Samantha Edworthy, of Tiny Boas in Heavitree, where the snake was delivered by police after being found inside a toilet
The reptile had managed to slither into the Exwick home before being discovered tucked-away under the rim by a woman on New Year's Day.
Police were shocked to see the animal inside the lavatory when they responded to an "urban myth" report of a snake in a toilet.
Officers managed to extract the reptile before taking it away to a "place of safety".
Samantha Edworthy of Tiny Boas in Heavitree, said husband Jason was "surprised" to receive a call from Devon and Cornwall Police about the creature on January 1.
"Why the snake was in the toilet, I'll never know," she said. "The police ring us frequently about snakes they've found in garden sheds or elsewhere, but it's the first time we've ever heard of one in a toilet."
It is understood the woman who reported finding the snake was initially not believed by the rest of her family.
They reportedly called the police as a "last resort" after being refused help by the RSPCA.
The 3ft-long California Kingsnake is described as being in "good condition" because of being well cared for by its owner.
Mrs Edworthy said: "This particular snake is tame. I wouldn't want to play with it because it can bite. But it's not viscous and only leaves tiny pricks on the skin.
"It could belong to a neighbour. But whoever has lost the snake must be devastated. It's never nice to lose a pet."
The California Kingsnake is considered harmless to humans. It may be found in a wide variety of habitats including woodland, grassland, farmland, deserts, and even suburban areas. The reptile is endemic to the western United States and northern Mexico.
It is as yet unknown who owns the snake or how it managed to get inside the lavatory, but it is thought the creature may be local to the area.
A police spokesman added: "The occupier had no idea where it came from or how it got there! Luckily it wasn't dangerous or venomous."
To prove the bizarre occurrence, police uploaded a picture of the slippery customer onto social network Twitter.
Exeter City Police tweeted: "#urbanmyth report of snake in toilet. Found hiding away under the rim. Officer removed it to a place of safety."
...would be enough to scare the **** outta someone!