cats
an unborn animal is the youngest
No animal should ever be tested on
what is the average animal tested
Yes.
yes there has to be
About 2,000 animals have been tested in Toronto.
The bat.
It depends on what is being tested on the animal and how. If medicine/drugs are being tested on an animal, then the animal might die/suffer. The same goes with some food products.
not likley. they will all be inapropreate
Many of the animals die, are put to sleep, or tested on with something else.
lab rats
about 100