While the cases you lay out are valid, cats and dogs are already allowed on flights. They must fit into a cannel that fits under the seat though. If I recall co

While the cases you lay out are valid, cats and dogs are already allowed on flights. They must fit into a cannel that fits under the seat though. If I recall correctly you can take the dog on your lap once in the air as well (might misremember this part. It's been a long time sober I've done this). Still would be a problem for anyone who struggles with allergies.