Here's why:
* Species barrier: While some diseases can cross the species barrier (like rabies), most diseases specific to dogs are not transmissible to humans.
* Immune system: Human immune systems are generally very effective at fighting off diseases.
* Blood-borne pathogens: While dogs can carry blood-borne pathogens like Lyme disease or heartworm, these are usually spread through bites or ticks, not direct blood contact.
However, it's still important to take precautions:
* Wash your hands thoroughly: After handling a dog's blood, wash your hands thoroughly with soap and water.
* Avoid contact with open wounds: If you have an open wound, avoid contact with a dog's blood.
* Seek medical attention: If you are bitten by a dog, seek medical attention immediately.
In general, while it's possible to catch something through contact with a dog's blood, it's extremely rare. The risk is much lower than from other sources like bites or ticks.