You're absolutely right that zoonotic diseases can be transmitted from animals to humans without our knowledge, so taking proper precautions to protect both ourselves and our pets is important. Coming in contact with an infected animal's saliva, urine, or feces can lead to some zoonotic diseases, such as rabies and leptospirosis, and we often do not know these animals have these diseases sometimes. Ringworm and salmonella, can be contacted directly by coming in contact with an infected animal's skin or fur maybe when playing with them. It's important to practice good hygiene and sanitation to prevent the transmission of these zoonotic infections and diseases. Use clean water to wash hands thoroughly after handling pets, as well as clean and disinfect surfaces where animal wastes are found. This will help maintain a hygienic environment for both humans and animal.