Documented cases in India show tigers (both tigresses and, more rarely, males) raising orphaned cubs that are not biologically theirs.
These are exceptional and rare behaviors, as tigers are typically solitary and males often kill unrelated cubs, but credible wildlife reports and observations from tiger reserves confirm it has happened.
@PorkiShikari You're comparing an animal to a human at the earliest stage of life and then acting surprised that the animal has more developed traits. Of course it does. The fetus is at the beginning of a process that, if uninterrupted, leads to infancy, childhood, and adulthood.
The average person today survives conditions that routinely killed people throughout most of history all thanks to testing on those animals.
It's much easier to reject a process when you're already enjoying the outcome.
@IndoKatholic Christians are perfectly okay with torturing animals in labs, but cry a river if a 3-week old fetus (a clump of cells) is aborted. Even if there are genetic disorders or a pregnancy due to rape or incest, you want the woman to carry it. This is why โ๏ธ is fast declining in Europe.