Finder doesn’t see files on Android devices from MacBook Pro USB commections

I have a Macbook Pro which I am trying to attach an Android device via USB (the Macbook recognizes my iPhone 6S just fine via USB). The Android device is a Samsung Note 3, and I expected when I plugged it into the Mac it would show up in the Devices section of Finder. It does not. I tried a coworkers Android device, and the Mac was not able to see that either. Both Android devices were getting power from the connection. But I am not seeing them in Finder. How can I connect my Android so I can see it in Finder on my Mac?