UA tend to be very stingy about small pet onboard.
For the past couple of years I had bring my dog onboard in the carrier and UA didn't really care if I pay for it or not eventhou there was a $75 pet fee policy.
This time at LAX,the gate agent spotted right away and made me pay $125 each way and same goes for the JFK total of $250 roundtrip. I think thats' expensive. By the way she's 10 lbs shi-tzu and I can't leave her at home by herself.
Thought I would share this with you guys.