At university professor more care about their research what I mean by that is they would like to perform studies on as much as different animals they can because they would perform some other studies on that for their research for which your company will pay the money which ultimately result into more budget for your project. They really care about the money because they get paid from the university but along with that if they find something interesting from your studies by doing more experiment than they can definitely get grants for that so at at university that is the motivation. Also let see if the professor is not tenure and if get the opportunity like this what he or she will do is they will perform more studies and try to find some thing different along with your studies and hope for the grant, the good thing for them in this is they are not paying for the animals so they are performing their studies for free. The motivation for them is if they get more grants then they can be eligible for tenure. Also in this scenario the professor save a lot of money for the studies of a PHD and the the motivation for PHD form this is if they get more publication by doing more experiment on different animals then they it’s good for their career. One example let see if I am doing research on the rat then I can use the same rat for my other experiment too like I can take that rat tail and extract the collagen and use in my other experiment or I can use that dead animals for the undergrad course work studies which will ultimate save money to the university or to the me.