Nope. She had both with her in coach. I had boarded early and, after she got on the plane, could not put the armrest down and started playing with her pets, I walked to the galley and (nicely, I thought) asked the FA if there was anyway I could move seats. She said that, since the flight was full, there was nowhere for me to move to and no one would switch because of the woman's size. She then added that, since I was tiny, I certainly could stand to share my seat with her (another issue entirely).

She later proceeded to take her animals out of their bags during the flight - she even walked the dog up and down the aisle. Now, I'll admit, the dog was adorable...but, by the time we landed, I could barely breathe from my reaction to the cat. To be clear, this was on DL, so they may have had a different policy, but, since I go out of my way to avoid every other airline now, I was curious as to the CO policy. (And, yes, that was the last flight I ever took - or will take - on DL.)

Anyhow, sorry for the rant, but I'm glad to know that there is a maximum number of pets that can be boarded on CO - while I don't expect unreasonable accomodations for my allergies (certainly there are much worse things to deal with), it's good to know an easy seat-switch should be possible. Thanks!