2.
How are dogs useful to us?
Answers
Answer:
They Boost Your Oxytocin Levels With Only Their Eyes.
They Help With Depression. Therapy dogs are basically old news.
They Boost Your Immune System. This is an intriguing one: science has posited that having a dog or cat can actually boost immune systems and help you fight off diseases.
They Provide Stress Relief. If you feel like your dog is basically your therapist, you're not on your own.
They Help Lower Blood Pressure. Again, this is partially a lifestyle-dictated health benefit, but it's also part and parcel of a dog's stress-relieving qualities.
They Can Detect Cancer. The powerful nose of your average canine isn't just great for sniffing out truffles (and the bone you thought you'd hidden in the garbage) — it's also a particularly powerful weapon in medical research and detection.
hope it helps
Answer:
dogs help us to catch the theives then can hear upto 40,000 Hz