Per Johansson says he heard a roar from his holidaying neighbour’s garden in southwestern Sweden late on Tuesday and went to have a look.
There, he found a female moose kicking about in the tree.
The animal was likely drunk from eating fermented apples.
With the help of police and rescue services, the 45-year-old Johansson later managed to set the moose free in part by sawing off tree branches.
But the animal appeared confused and wandered into Johansson’s garden, where she was still resting yesterday.
Other neighbours in the Goteborg suburb Saro had seen the animal sneaking around the area for days.
Johansson said the moose appeared to be sick, drunk or “half-stupid”.