Vivisection (from Latin 
vivus, meaning "alive", and 
sectio, meaning "cutting") is defined as surgery conducted for experimental purposes on a living organism, typically animals with a central nervous system, to view living internal structure. The term is sometimes more broadly defined as any experimentation on live animals. Or to be more blunt torture.
Warning this post contains graphic pictures that some readers might find disturbing.
I will probably get slated by a lot of people for this post because I know there sponsored by Iams, but I'm all for freedom of speech and speaking my mind.
The first time i heard about Iams practising Vivisection was a couple of years ago when i was in the Library and read a book on animal cruelty, when I read about how Iams treat there animals I felt sick and had to stop reading.
In 2002 and early 2003, a PETA undercover investigation at Sinclair 
Research Centre, a laboratory hired by Iams, uncovered a dark secret: 
The dog and cat food manufacturer funds animal testing. Dogs were left 
piled on a filthy floor after chunks of muscle had been hacked from 
their thighs, and extremely sick dogs and cats were left in cages to 
suffer without any veterinary care. Watch the complete undercover 
footage from this investigation below.
| 
Scene Descriptions: | 
              |   | Scene #1: The Iams dogs in this scene have 
just had large chunks of muscle cut from their thighs and have been 
placed on the laboratory floor to recover from the effects of the 
anesthetics. Some of the dogs are unconscious, while others are awake 
and trying to right themselves. The federal Animal Welfare Act requires 
that this type of surgery be conducted in “aseptic” conditions. | 
              |   | Scene #2: This scene provides a closeup of the Iams dogs and their wound sites. | 
              |   | Scene #3: A bloodied beagle is strapped down to an x-ray machine so that her muscle, fat, and bone density can be recorded. | 
              |   | Scene #4: One of the laboratory’s employees tells our investigator to hit the dogs on the chest if they stop breathing. | 
              |   | Scene #5: The Iams dog on the x-ray machine is placed back in the pile of dogs on the floor. | 
              |   | Scene #6: Anesthetics are administered to an Iams dog left unattended on the laboratory floor. | 
              |   | Scene #7: Iams dogs, some awake and some unconscious, lie on the paint-chipped laboratory floor. | 
              |   | Scene #8: A laboratory worker holding a dead 
Iams dog in a black plastic bag tells our investigator that the dog 
“bled out its mouth.” The dog, who was found dead in his cage, was 
subjected to a muscle biopsy earlier in the week. | 
              |   | Scene #9: Iams dog Mae-Mae exhibits stereotypical behavior (i.e., pacing and circling) associated with life in a cage. | 
 
              |   | Scene #10: Iams dog Prancer’s 
                  feet are splayed by the metal slats of her cage flooring. Dogs 
                  develop sores on their feet from this type of flooring. | 
 
              |   | Scene #11: Closeup of Prancer’s 
                  feet on the flooring of her cage. | 
 
              |   | Scene #12: During a visit 
                  by an Iams representative, one of the company’s dogs exhibits 
                  stereotypical behavior associated with life in a cage and a 
                  lack of socialization and enrichment. | 
 
              |   | Scene #13: The lighting 
                  was so poor in one of the buildings housing some of the Iams 
                  dogs that our investigator had to open the door to the outside 
                  in order to see. | 
 
              |   | Scene #14: Lacking any socialization 
                  and psychological enrichment, Iams dog Phoebe is afraid to be 
                  handled. | 
 
              |   | Scene #15: Iams dog Maisy 
                  cautiously greets our investigator while Maxine hugs the back 
                  wall of her cage. | 
 
              |   | Scene #16: Iams dog Muffy 
                  lies on the steel flooring of her cage. | 
 
              |   | Scene #17: Iams dog Gina 
                  looks out from the confines of her cage. | 
 
              |   | Scene #18: Iams dog Sally 
                  rises from the floor of her cage and cowers in fear. | 
 
              |   | Scene #19: Iams dog Mickey 
                  languishes behind the bars of her cage. | 
 
              |   | Scene #20: Iams dog Fifi, 
                  her feet splayed on the steel slats of her cage flooring, nervously 
                  watches our investigator. | 
 
              |   | Scene #21: A solitary Iams 
                  kitten in a barren, steel cage. Iams says that its kittens and 
                  puppies are litter-reared for companionship and socialization. | 
 
              |   | Scene #22: Sally’s 
                  leg is caught between the slats of her cage flooring. | 
 
              |   | Scene #23: Under the flooring 
                  of her cage, Sally’s leg can be seen. | 
 
              |   | Scene #24: A veterinary 
                  technician frees Sally without even examining her to be sure 
                  that her legs are not injured. Previously, another dog caught 
                  in the flooring of her cage was so severely injured that she 
                  was eventually killed. | 
 
              |   | Scene #25: Infected with 
                  Lyme disease, Iams dog Muffy limps in her concrete pen. | 
 
              |   | Scene #26: The director 
                  of the laboratory explains to our investigator why he believes 
                  that Iams is not committed to implementing an effective program 
                  of socialization and psychological enrichment. | 
 
I can proudly say I've never fed any of my pets Iams and never will, if i did i would feel that i was condoning animal cruelty, I think a lot of people think Iams is good because the vets promote it on the shelves in the surgery and there bound to say It's good if they stock it, from what I've heard a lot of vets are sponsored by Iams and paid to stock there products.
After the latest food recall of Iams for possible contamination of Salmonella poisoning and It's not the first time there food's been recalled for the same thing It's easy to see why more people are turning to feeding raw.
More information on Iams and vivisection can be found at these links.
p.s I don't know if these practises still go on today but the fact that they ever did is cause for concern and quite disturbing.