Should I call Animal Control?

There has been this couple who come onto campus with their kid in a stroller. They bring their two dogs and don't care to bring a leash. For one, isn't it illegal in Texas to not have their dogs controlled on a leash in public places instead of letting them run around carelessly?? Additionally, their dogs are taking craps on campus property and they walk off without cleaning up after their animals. I have encountered them twice now in the past couple weeks. Should I call animal control the next time I see them wandering around campus with their dogs on the loose? Just curious on what I should do since we do have cats who take refuge on campus. Oh and one last thing, they joked about having the dogs hunt the cats when I first talked to them. This is not okay!