These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Too Dumb to Live: Arliss tries to open up the corn crib that contains a rabid Old Yeller, even when can clearly see the dog snarling, lunging, barking, and acting not at all like the cuddly family pet.
Then there was the incident with the bear cub.
Values Dissonance: It can be very difficult for modern parents to stomach the idea of a mother letting her son be the one to kill his beloved pet, rather than doing it herself and sparing him the trauma. Sure, back then he would have been exected to "man up" and do it himself, but in the 21st century, few people would dream of even allowing their child to witness the euthanasia, let alone commit it.