Bestiality will never be considered normal because the animal cannot consent. PETA would have a "cow".
According to
WIkipedia, pedophiliia is considered "a psychiatric disorder in persons 16 years of age or older typically characterized by a primary or exclusive sexual interest toward prepubescent children (generally age 11 years or younger, though specific diagnosis criteria for the disorder extends the cut-off point for prepubescence to age 13)."
In most states the age of consent is 16, although there are a few that go as low as 14. If that number gets much lower, I could see some blurring of the lines.
Oh, and as to the original - transgendered persons.......no matter what the psychiatric association says.....they aren't normal.
Proponents of bestiality make a compelling case that many animals do consent... enthusiastically. Besides, PETA has no credibility on anything anymore after their dog execution stats.
Rest-assured, foolish citizen. Bestiality is normal, and we WILL educate your kids on how to do it properly!