I have a high tolerance for "guy humor", have been friends for 17 years with a pack of dudes who I love and have had many dumb hang-out session filled with over the top/dude humor, I LOVE Justin Long and Steven Zahn... and I still couldn't get through this movie! I turned it off halfway through, haha! I think the direction and editing wasn't great so that didn't help either.
I mean... sure there were some funny moments, but it was just weird and inconsistent, and SO DUMB and juvenile at times that it just finally turned me off. I mean...not even in a clever way. There were some REALLY absurd scenes that just destroyed any sense of investment in the story. For example - A turkey who gets "stuck" on Steve Zahn's penis... and the subsequent jokes and visuals in the doctors office after that were kind of hard to even believe. Sort of funny at first, but just went on and on and was so dumb and creepy. Like, we get it... penis jokes! How many do we need? ;-D Lots of over-the-top sight gags, in general.
I would be fine with that if the whole movie was a totally absurd farce and that was the tone, at least I would know what I was getting. But it started as, and tried to also be, a kind of typical "feel good/quirky bro comedy" like Anchorman or Hot Rod and it is NOT AT ALL as remotely entertaining as those films or emotionally investing, because it keeps switching gears. So I kept getting jarred by the complete extreme, stupid, 12 year old boy humor mixed in with a more charming or possibly good-natured comedy with some heart. TO be clear, I don't mind stupid dude humor, it's just that I have my limit! haha. I think the tone of the film should have picked a lane, is all.
I love animals too and for a movie about an animal show it seemed pretty clueless and flippant towards animals at times which threw me off. Minor complaint, nothing horrible, and know it's a comedy, but just thought I'd mention it if you are sensitive to that kind of thing. But it was nice to see Justin Long in his hot hippie gear ;) If you're after the same, I would recommend looking for his clips on YouTube and not spending much time on this one.