In my opinion you can stop right there. He sees books as wonderful objects that bring him joy. What better way to foster reading in a young child? 
bump:
But…it’s a store selling books, in which customers are expected to use other customers’ reviews in deciding which books to purchase over which other books. Are customers supposed to automatically give every book a good review, because it happens to be a book, and can therefore teach the alphabet, or hook a kid on reading? There are good books and there are bad books, and someone who’s shopping for kids’ books on Amazon is likely to buy their kids SOME book that will serve the same purpose, just one with mainly positive reviews.
Dendarii Dame:
A timely post, as just yesterday it was revealed that Sue Grafton has copped out on the letter and simply titled the 24th book in her alphabetic mystery series “X”. I, for one, am very disappointed.
Xenopus.
Most of the alphabet animal stuff my daughter had did indeed use “X-Ray Fish”. Except, oddly enough, Dr Seuss who went with “eXtra foX” despite him happily making up words for other letters including Zizzer-zazzer-zuzz for Z.
On a related note one of the alphabet animal apps I had for my phone let you select a variety of languages and you would get different animal names as a result (sometimes using the same pictures e.g. B for Bird in English, O for Oiseau in French and V for Vogel in German etc). Amusing, in all languages Y was always Yak. Yaks are universal, I guess.
Here’s a whole list of x-named animals.
Isn’t there some kind of amphibian that has a name starting with x? I remember seeing a picture of it in a magazine (Ranger Rick?) about 30 years ago. It was white, had red feathery things coming out of its head?
Gyrate:
Not so strange, when you realize that he’s going for introducing children to the SOUNDS of the letters. When used at the beginning of a word, “X” doesn’t make its characteristic “ks” sound, instead it’s more of an oddball Z. If he made up a word beginning with X, that’s likely how parent would pronouce it when read.
Catamount:
I suspect you’re thinking of axolotl, which doesn’t exactly start with the letter, though I understand how a vague memory might have you thinking it did.
Honestly if you haven’t instilled in your child the evil of not recycling and composting by the age of 2 then you are a bad parent.
That’s the one. God, I love this place. Where else can someone figure out what something is by a vague description of a childhood memory?
The rudeness might make the book more attractive to some kids. Part of what makes fart and poop jokes funny to kids is that those subjects are taboo. If the book can turn some of those kids on to reading, that’s a good thing.
A book where everybody plays nice all the time does tend toward the boring. “Books are boring” isn’t the message we want to be sending to kids. But that’s what they’ll get, if they aren’t allowed to read books with conflict or books with people (and anthropomorphic animals, machines, etc) who are not behaving in an approved way. Hell, “don’t do everything you read about a character in a book doing” is a valuable lesson in and of itself.
Meh. The little brats take after their mother anyway.
My son had an ABC book of animals, all photographs. X was fox, which also bothered me, because I thought it should have been x-ray fish.
But it was my son’s favorite animal in the book. He’d point to it every time, exclaiming, “He’s sleeping!” Which the fox was doing, to be fair.
Maybe you should just buy the mug, then.
Catamount:
You remembered the look of the creature quite accurately. Fortunately, I’d seen just the creature at the Maritime Aquarium in Norwalk, CT less than a month ago, and noted how good a Scrabble/Boggle word its name could be.
You didn’t read MAD regularly? Those of us who did knew all about axolotls and potrzebie.
Meh. 10% is not surprising. 10% of reviewers hate just about anything.
Look at this list of http://thegreatestbooks.org/
Note that Moby Dick has 10% * reviews. Ulysses has more than that (and I understand that, it’s a hard book.) Don Quixote, War & Peace have only about 5%, but still.
Any well reviewed book will get 5-10% One star reviews. No biggie.
Oh that is awesome. Maybe I’ll get it. 
Oh no, on my daughter’s chart, Y is Yellowhammer…
There’s also a particular butterfly species for one letter (I can’t recall right now which letter and she’s asleep so I can’t check.)
I suspect drugs…
Although, I just want to add, I think using scientific names for the X-animal is cheating.
OMG – I love this:
http://www.goreystore.com/shop/accessories/edward-gorey-doubtful-guest-pin
Well, I’ve just put the book on reserve at the library. I have no doubt my kids will love it, and I strongly suspect that it will not make them stop putting their paper and cans in the recycling bins.
Oh sure… that wasn’t the issue. I was torqued out of shape about the reasons they gave.
Had they said “We didn’t like it.” I’d have been ok with that, but claiming it teaches kids to be rude, or bitching because there were alphabet garbage examples that could possibly have been recycled is idiotic.