My wife just got two calls from this number, 20 minutes apart, on her cell phone.. we missed the first one; the second one we actually were able to pick up and we heard what sounded like a tiger growling on the other end... it sounded pre-recorded... that is all we heard.  A quick internet search tied that number to an insurance agency in Chattanooga, TN (we are in Memphis)

Blue Cross And Blue Shield Of Tennessee
801 Pine St, Chattanooga, TN

Yep, I just received a call from that number, too. Same animal- or drum-like recording. Only answered because we have Blue Cross Blue Shield, which is what caller ID showed. Some folks obviously have too much time. Annoying.

Just had the same thing happen. The caller ID said Blue Cross blue shield, but when I answered, only heard a "big cat" growling. Very weird. We are in memphis as well.

I am in Memphis and my wife got the same "tiger" call on our home phone. Very alarming!

I just received this same call. It kinda of spooked me too.  I called the # back. BCBS answered.  The operator said that it was an automated voice messaging/calling system that was malfunctioning.  She was very sorry and said they had received many, many calls already concering the 'Tiger' calls.