I'm not a vet, but I do work part time in a vet clinic. I take care of the kennels, cleaning up poo, giving water and food, bathing, medicating, holding dogs for shots, grooming. My sister is a vet tech at the same clinic. I know most of my stuff from her, as one of the vets really irritates me. I'm deaf in one ear, and he knows it, so he intentionally tries to get my attention while he's on my right side (the side with no hearing). And because I'm so squeamish, I don't do surgeries and shots, but I've watched a few spats and neuters. I've also assisted with X-rays, and I know how to recognize and stop a canine seizure.
My sister has access to our medical cabinet and, because she works full time, is able to get them for free. I would have to pay seventy percent. I have no intention to be a vet. I much prefer writing. Regardless, it comes in handy when getting puppies. My doctors know she's coming, and I can probably get her spayed for cheap.
What sort of chews do you give your dogs? I'm a huge fan of bully sticks, myself. They can last several weeks for puppies, and they don't cause internal blockage or stomach upset as with rawhides. I also give ice cubes. Satisfies the urge to chew, hydrates, soothes gums, and is free!