The right parasite preventatives will help keep intestinal worms and other menaces out of your new furry friend. The most important thing you need to know about parasites: You usually can’t see them, and they can cause big trouble before you even realize that they’re there. Some parasites have evolved to be able to hide inside the mother dog and come out specifically to target her puppies, so no matter how well cared for mom is, the puppies are still at great risk for intestinal parasites. Can I tell if my puppy has worms? Intestinal worms, like hookworms and roundworms, can cause signs like vomiting and diarrhea, but they can…