However, you can get some illnesses from your dog precisely because they harbor germs that they are resistant to, but humans aren’t. These zoonotic diseases can be passed from animals to humans, and dogs can potentially have several of those. According to WebMD , you can get rabies, lyme disease, and several different types of worms from your dog. Leptospirosis is also a concern for young children and people with weakened immune systems, which also include pregnant people, people undergoing chemotherapy, and people with HIV. Fortunately, vaccines and regular vet care can reduce your dog’s risk of bringing these diseases home.
The old mantra build one to throw away is dangerous when applied to large scale commercial applications. If you are writing code experimentally, you may want to rip up the function you wrote last week when you think of a better algorithm. That’s fine. You may want to refactor a class to make it easier to use. That’s fine, too. But throwing away the whole program is a dangerous folly, and if Netscape actually had some adult supervision with software industry experience, they might not have shot themselves in the foot so badly.