They own Pedigree (dog food) and Whiskas (cat food). So there is a connection to pet care there.
On a side note, they also sponsor projects to help with and care for feral cats and stray dogs in Mexico.
There might be some decent people with good intentions at those companies, but it all seems like some white vest marketing to me.
And any pet owner will confirm that veterinarians make good money. So for MARS to get into that market seems like a smart move.