I recently flew with an airline whose policy is that pets at all times must be kept in a cage and stoved under the seat in front of you. In this case, a dog was sitting on the lap of a passenger. If requested by a fellow passenger or even if not requested, is it the responsibility of the staff at the earliest convenience to make sure the dog owner is in compliance of policy?

I did not make such a request, as I wasn't near the dog and am not allergic to dogs, but out of idle curiosity I did engage in a general discussion about pets and was told anyone at any time could bring a pet at any seat.

On another trip on another airline, a request was made before takeoff by staff to passengers overall not to eat peanuts, as one passenger was allergic to peanuts.

I am not sure what to make of all of this.

The peanut thread comes up every so often here, but you can probably glean more information from a google search. Basically, some peanut allergies are so severe that even airborne peanut essence can cause severe problems for the person with the allergy.

B.S., despite what the always true Internet says.

Too bad if you had handfuls of peanuts in the lounge before getting on the plane.

I can't believe that airlines let pets onnboard. In an emergency tying to get your dog off would be the same as trying to lug a big suitcase off. I don't want to be subjected to barking or worse.

BS or not, the law suits are real.

I once boarded a 5 hour flight only to realize I was seated next to a woman with a yappy little dog. She looked like something out of a reality show. Dressed head to toe in bright pink with 4 inch heels and 1 inch nails, wearing way too much jewelry and perfume. I was ready to cry. But then the FA came along to check her dog carrier, which was apparently not compliant with requirements (purse type which didn't close completely). She was told that the dog couldn't fly until she got a proper carrier. She left the flight and I got the row to myself

I wonder how on earth she made it all the way to inside the flight!

The carrier looked like a proper under the seat dog carrier but the zipper didn't close completely at the top. So likely no one else noticed until the FA insisted that she close the zipper. She said she was told it was ok for flight, but the FA disagreed.

Each airline has their own policy.

In some countries.

With such a bad allergy, then such person should not travel abroad at all.

The key work here is "pets." If someone has a dog and claims that the dog is a service or emotional support animal, then it is not considered a pet.

And there is a whole separate thread on actual service pets, fake service pets, and so called emotional support animals.

It always depends on the airline, not an easy topic this one

Which lawsuits?

Against passengers who eat peanuts? Never heard of it.

If I buy some food - say B - and passenger A demands that no one on the entire flight can eat food item B, I expect that passenger to buy me an alternative meal or else I will eat B. I'd given them a fair interval to decide and to procure the surrogate meal.

Against businesses that permit peanuts in the presence of persons with severe peanut allergies. I used to know a trial lawyer who took on many peanut cases, though most involved failure to disclose peanut products in foods.