Review: Off the chain and ready to sniff you up, ‘Strays’ is, at root, a typical tail of vengeance

What to make of “Strays,� a proudly raunchy, decidedly R-rated comedy about a pack of stray dogs on a brash journey of revenge against one’s abusive owner? As the film’s widely seen red-band trailer makes clear, it’s a live-action talking-dog picture definitely not for kids. But is it compelling enough to fetch older audiences, even the staunchest pup lovers?

Take out its wall-to-wall F-bombs, envelope-pushing scatological humor and often gross and, in one key case, deeply disturbing visuals, and you’re pretty much left with an amusing if rote story of well-meaning animals learning lessons on the road. Think “Homeward Bound: The Incredible Journey� or the more recent “A Dog’s Way Home� but with the furry main characters having their way with couches and garden art, tripping on magic mushrooms, and spouting poop and penis jokes.

Directed by Josh Greenbaum (“Barb and Star Go to Vista Del Mar�), written by Dan Perrault (Netflix’s “American Vandal�) and deftly voiced by a cast of comic pros, the film finds an unflaggingly upbeat, 2-year-old border terrier named Reggie (Will Ferrell, in “Elf� mode) abandoned by his dirtbag dog-dad, Doug (Will Forte), on some mean city streets three hours from their ramshackle home. Doug always detested Reggie and only ended up the owner of the sweet pup to spite his ex-girlfriend, who loved the dog but learned to hate the two-timing Doug.

No number of pushy laughs here can make Doug’s mistreatment of Reggie seem anything less than appalling, even if — or especially because — the pooch misguidedly believes his owner adores him, and that Doug’s efforts to lose him are just a fun game. Many of the dog’s-eye-view observations here are droll and relatable, but this isn’t one of them; it’s just sad.

Once left on his own, Reggie quickly falls in with Bug (Jamie Foxx), a tough, potty-mouthed Boston terrier with a fierce independent streak and strict set of rules that doesn’t include humans. Reggie and Bug are the classic odd couple, and it doesn’t take a psychic to predict these two fast friends will change (and maybe even save) each other’s lives by journey’s end. It’s a satisfying relationship to watch unfold and one of the film’s better elements.

A scene from the movie “Strays.�

(Chuck Zlotnick / Universal Pictures)

With the added help of Bug’s stray pals — Hunter (Randall Park), an anxious, neck-cone-wearing Great Dane, and Maggie (Isla Fisher), a smart Australian shepherd with a super sense of smell — Reggie begins to see how Doug is nothing but a cruel, pet-loathing lowlife. The pack then bands together to find its way back to Doug’s house, where Reggie will punish his ex-owner by chomping off his beloved genitals. If you don’t find this prospect even remotely funny or tolerable, this isn’t the flick for you.

En route, we’re treated to a hit-or-miss barrage of comedic bits involving a pizza-and-beer blowout, crazy-making fireworks, a rapacious eagle, a four-way urination ritual, a smeary dog-pound escape, an unfortunate (and frankly disturbing) rabbit incident and much else. There’s also plenty of goofy, no-holds-barred canine conversation (CGI was effectively used to animate the dogs’ mouths) about everything from territory-marking and why humans scoop up after their pups, to theories about the hounds’ not-so-private parts. A scene in which the dogs all frantically spin in circles before finding a suitable sleeping position should tickle any pooch parent.

Still, the swearing and gross-out humor loses its bite after a while. We’re left with an at times heartfelt and enjoyably observed story that may hold interest with more patient viewers but, due to some episodic scene work and slack pacing, leave others restless. And lest anyone think the movie’s randy-animals conceit is especially groundbreaking, more than 50 years ago came the hyper-bawdy counterculture classic “Fritz the Cat,� (“He’s X-rated and animated!� went the tagline).

Kudos to the “Strays� animal training team, led by Mark Forbes (“A Dog’s Purpose�), which clearly had its work cut out for it. And to the dogs themselves (voiced by Josh Gad, Harvey Guillén, Rob Riggle, Greta Lee and others), who are adorable and engaging even when they’re doing and saying the darnedest things — except during that climactic payback sequence at Doug’s. Beware.