The Gray Wolf is the animal that has only one partner in life.
The wolf, also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America.
More than thirty subspecies of Canis lupus have been recognized, and gray wolves, as popularly understood, comprise wild subspecies.
The wolf is the largest extant member of the family Canidae.
Even birds famously reported to “mate for life” - swans, geese, vultures, penguins and albatrosses – quickly find a new mate if one of a pair perishes.
In mammals, only 3% of 4,000 mammal species are reported to be monogamous.
Most-often cited: beavers, wolves, Gibbons and Prairie voles.
The animals that mate for life even after death are beavers, otters, wolves, some bats and foxes and a few hoofed animals.
Beavers are one of the few mammals that mate for a lifetime, only choosing to find another mate if their original mate dies.
But here's where it gets interesting: there are two types of beavers, European beavers and North American beavers.
Beavers are large, semiaquatic rodents in the genus Castor native to the temperate Northern Hemisphere.
There are two extant species: the North American beaver and the Eurasian beaver.
Beavers are the second-largest living rodents after the capybaras.
As beavers rarely approach humans, they are neither gentle nor aggressive.
You can coexist peacefully with these animals if you keep a distance between them and yourself.
The animal that dies after mates is the male Kalutas.
Male kalutas, small mouselike marsupials found in the arid regions of Northwestern Australia, are semelparous, meaning that shortly after they mate, they drop dead.
This extreme reproductive strategy is rare among vertebrates —only a few dozen are known to reproduce in this fashion, and most of them are fish.