This is something that Catholics should be able to agree upon. However, there is money to be made.
In this case, a chimera is an embryo produced containing both human and animal DNA. They are formed for the purpose of research. These things present to us a nightmare scenario. It is not unreasonable to fear waking up some day to find out that all the assurances that these creatures cannot grow to maturity, that they cannot be gestated and born, that no attempts will be made to take them to birth, etc., have been ignored and violated and that we have on our hands a creature that we have to accept into the realm of intelligent beings but not completely human.
Front Line Moral 