Don't we all have enough to worry about already?
It's smaller than you might think, and surprisingly hard to find.
In Australia, the commercial slaughter of millions of adult kangaroos for food results in countless dependent youngsters, also called joeys, left to suffer and die because their mothers have been killed. The study about which I write below refers to killing the joeys who have lost, or will lose their mothers, as euthanasia, which it is not.