As far as science goes there is still no alternative to animal testing. There are animal model available and being currently developed but if you see the from bio chemical prospective which is a mystery in itself. If company develops a drug or bio-material than without animal testing its almost impossible to identify how would they react within the body until and unless tried on animal. Animals model at present have not been so far develope to identify this aspects. But ya as far as possible scientist must be and should be avoiding animal experiments as far as possible but to completely stop animal trial is really dangerous.