>>13770746We have observed the emergence of the new organ/tissue in the digestinve track of some lizards in 2 or 3 decade when they were left alone in an island in Mediteranean Sea.
We observed wings of birds living accross highways getting shorter.
Countless of things like that.
And 100 times for in Unicellular organisms.
The concept of species is not clear cut. There is several definitions. And the difference between a variety or race and different species in not really clearly cut.
inb4 ability to reproduce together
> maybe at a generation n, but 2 groups may still be in the process of splitting upObviously no one we will ever witness the process of dogs becoming they're own Cetacea, we don't have the life time
