I noticed that cricket sometimes makes a little clicking sound when she breathes, and sneezes often. When she sneezes, bird mucus(?) comes out, but her nose isn't runny any other time. The mucus is clear. The rim of one of her eyes is also red, and she preens a lot. Her appetite is good, and her droppings are normal. My dad said he'd make her an appointment if I wanted, but he just payed for my dog to be spayed, so I don't want him to have to pay again if it's not necessary. Do you think I should take her to the vet?