Let me start by saying I don't recall laughing once during this comedy. From the opening scene, our protagonist Solo (Giovanni Ribisi) shows himself to be a self-absorbed, feeble, and neurotic loser completely unable to cope with the smallest responsibilities such as balancing a checkbook, keeping his word, or forming a coherent thought. I guess we're supposed to be drawn to his fragile vulnerability and cheer him on through the process of clawing his way out of a deep depression. I guess we're supposed to sympathize as he stumbles through a series of misadventures seemingly triggered by his purchase of a dog, but in reality brought on by his own contemptible nature. I didn't get the slightest hint at any point that Solo ever possessed any redeeming character, which became disturbingly apparent when he failed to feed his dog for a few days. No spark of humanity or glimmer of conscience gave me hope that he would ever realize his life is so utterly miserable because he's a self- absorbed, self-pitying lowlife. I didn't develop any connection with this character. He didn't seem to care, and so neither did I. I actually wanted him to get his kneecaps busted at one point.<br /><br />The dog was not a character in the film. It was simply a prop to be used, neglected, scorned, abused, coveted and disposed of on a whim. So be warned. Even though "dog" is in the title, this film is not a romantic comedy for dog lovers.<br /><br />Scott Caan's role is amusing and believable as the oversexed best friend/cad. Don Cheadle is sincere and magnetic - I always want to see more of him on screen. Mena Suvari was delightfully repellent. Lynn Collins role of a "stripper with a heart" was well acted, but the character was simultaneously absurd and clichéd, not to mention there was zero chemistry between her and Ribisi.<br /><br />Romantic? Hardly. Comedy? If you say so.