When it comes to the Dr. Seuss movies, this one isn't the worst of the bunch. Of course The Cat in the Hat is the worst one. This one, it's look like The Lorax but it didn't felt like the Lorax. If this were compared with The Grinch at least that one tried to be the Grinch, it didn't work all the time but it did a better job than this one.
The songs in this aren't even that good, even though one of them I did enjoy ironically. Most of these songs are supposed to "cool and hip with the kids" that's the problem there. You have Taylor Swift (barely) and Zac Efron in your movie and she doesn't sing.
To sum it all up, it looks good but it doesn't sound good. I bet the Lorax and Dr. Seuss don't like this movie.