I actualy find this really interesting.. Looking in the past and knowing scientists are testing on animals and humans creating infectiouse viruses and
other things. This world is gona be wiped out someday due to animal testing and human testing.
The bible does talk about animals in Heaven. However, I do not think that the afterlife is just like the physical world we are in now, and it is most
likely a spiritual state so it does not matter if the soul belonged to an animal or a human.