Firefighters used water tender ladders to extinguish the fire.
A spokesman from Nottinghamshire Fire and Rescue Service said: “The fire was relatively small, however there was a large amount of smoke within the property.
"One woman was assessed by EMAS at the scene, and unfortunately a number of household animals died.
"Some animals were taken to a nearby veterinarians for assessment.
“A Fire Investigation found the cause to be electrical.
"We left the scene around 9pm.”
A resident, who lives on Brown Avenue, said: “I didn't see any smoke or anything like that.
"There were about four or five fire engines, three special units, an ambulance and about six police cars.
"With all those appliances I would think it was really serious.”
Another neighbour said: “I saw the police, fire and the ambulances. I knew there had been a fire but I didn't come out so I don’t really know what happened.”
Nearly £10,000 has already been raised after a fundraiser was set up by Paul Haywood, who runs Haywood’s, The Home Of Alrate Cheesecakes, on High Street, Mansfield Woodhouse.
Paul said: “Cheryl was at the new centre for a meeting when she got a call from a vet who was dropping off an injured animal who noticed the smoke and called her.”