What the species is and where it came from
Alces alces is the sole extant species in the genus Alces. It is the world’s tallest, largest and heaviest extant deer. It is the second-largest land animal in North America, after the American bison.
How it works, in terms someone would actually use
Moose move through boreal and temperate broadleaf/mixed forests across the Northern Hemisphere. They browse terrestrial and aquatic vegetation seasonally. Their sealable nares let them feed underwater. They walk alone except for mother-calf pairs lasting ~18 months.
What it gets right
It gets right the biomechanics of weight distribution: its footprint supports twice the body weight per surface area as caribou. It gets right the proboscis adaptation—sealable nares for aquatic browsing. It gets right its taxonomic uniqueness: Alces alces is the only extant species in its genus.
What it does not
It does not form herds. It does not have pointed, dendritic antlers like other deer. It does not have an IUCN conservation status given in the material. It does not inhabit tropical, arid, alpine or southern-hemisphere habitats.
What it changed
Nothing is stated in the sources about what the moose changed—no historical, ecological or cultural impact is verified here.
Who it is for, and who it is not
It is for observers in circumpolar boreal or temperate broadleaf/mixed forests who recognise solitary, palmate-antlered cervids wading in ponds or browsing willow. It is not for those expecting social behaviour, small-scale movement, or subtropical habitat.
Is it worth your time
Yes—if you are in its range and want to see the largest, tallest deer on Earth feeding at water’s edge or standing motionless in forest light. It is not worth seeking out elsewhere.