Testing on animals have for a part good and other part bad.
First, I go talk the good things. Practicing with animals does that the humans can develops and find cures for diseases and with they, we can see how affect in they, but in some ocassion don't have the same effects in the animals that in the humans.
The bad things that I see, it's that the animals are alive beings and is can that to bring about damages and can die.
In my opinion is a thing with there are problems because the animals suffer and don't have doing the that doesn't like for their. Definetly I think that is necessary for the investigation but don't arrive to the end in the that the animals die.