Growlithe is a quadrupedal canine Pokémon. It has orange fur with black stripes along its back and legs. The fur on its muzzle, chest, belly, and tail is beige, as is an additional tuft of fur on top of its head. Growlithe's coat is noticeably longer on its chest and tail. It has gray eyes, a black nose, and large, round and triangular ears with beige interiors. Its forepaws have two visible claws, while its hind paws have three toes each. Each paw has a brown pad.
Growlithe is a friendly and loyal Pokémon that will fearlessly defend its Trainer and territory from harm, even against larger, stronger enemies. In particular, it has been known to fight with Rockruff over territory. It will fiercely bark at, bite, and chase away any perceived threat. Otherwise, this obedient Pokémon will wait motionlessly until given an order. It has a long history with people, as its bones have been found in Stone Age ruins. In the wild, Growlithe can be commonly found in grassy plains.
Growlithe also has a powerful olfactory sense. If it detects an unknown smell in its territory, it roars to flush out the intruder. It can smell the emotions of others, and never forgets a scent. However, strong, unpleasant smells can disable Growlithe's sense of smell for short periods, as seen in the anime.
In Hisui, Growlithe's fur is dark orange-red, while its mane, muzzle, and tail are light grey. Its mane covers its eyes and extends below its head, ending with three curls. Its ears are round and square with light orange-red interiors. It has a small horn in its head and its tail is curly.
Hisuian Growlithe's soft and insulated fur allows it to survive the cold weather of Hisui. Growlithe rarely uses its horn unless needed due to it being easily broken. A pair of Hisuian Growlithe are known to be vigilant when guarding territory. Growlithe in that region takes much longer to bond with humans because it lived apart from humans for many years.
James had a pet Growlithe nicknamed Growlie, which he owned as a child. However, he left it behind when he ran away from home. Despite this, it remains loyal to James.
Growlithe have been frequently used as police dogs by Officer Jenny prior to Pokémon the Series: Black & White. The Officer Jenny of Fula City also has a Growlithe, as seen in The Power of Us, which is set in a timeline different from the main series.
In The Flame Pokémon-athon!, Lara Laramie's Growlithe battled Ash while defending a Tauros from a ranch that he mistakenly tried to catch.
In Saved by the Beldum, Morrison used a Growlithe in his battle against Gavin, where it was defeated by Marowak. During his battle against Ash, Morrison's reluctance to fight his friend led Growlithe to be defeated by Corphish.
In On Cloud Arcanine, an Arcanine was taking care of a whole litter of Growlithe. Drew and May attempted to catch the Arcanine, but after finding the Growlithe litter, they decided to leave it alone.
In Cilan and the Case of the Purrloin Witness!, Tedesco's Growlithe helped defend Ash and his friends when Teaque's Vanillite's attacked them.
Growlithe debuted in Sparks Fly for Magnemite, where it was seen in Gringey City's Pokémon Center.
In Mewtwo Strikes Back, a Trainer's Growlithe was defeated by Mewtwo while it was serving Giovanni.
In Pikachu's Vacation, a Growlithe was at the Pokémon Theme Park.
In Showdown at the Po-ké Corral, multiple Growlithe were living at Professor Oak's Laboratory.
In Pikachu Re-Volts, Cassidy and Butch controlled a Growlithe at Mandarin Island North.
In Shell Shock!, an expedition crew led by Nurse Joy owned two Growlithe. They helped alert the group when boulders began to rain down on them.
In The Power of One, multiple Growlithe sensed the disturbance caused by Lawrence III.
A Growlithe appeared in the Japanese credits of Pikachu's Rescue Adventure.
A Growlithe appeared in Snubbull Snobbery, under the ownership of some security guards in Palm Hills.
A Trainer's Growlithe appeared in Hot Matches!.
In Beauty and the Breeder, a Pokémon Breeder's Growlithe participated in a Pokémon breeding competition.
In Training Daze, a Growlithe acted as a security guard for a penthouse.
Multiple Growlithe appeared in the opening sequence of Destiny Deoxys.
In Off the Unbeaten Path, a Trainer's Growlithe participated in the Pokémon Orienteering competition.
A Coordinator's Growlithe appeared in What I Did for Love!.
In Once More With Reeling!, a Coordinator's Growlithe competed in the Terracotta Contest.
A Growlithe appeared in Not on MY Watch Ya Don't!.
A Growlithe appeared in The Champ Twins!.
A Growlithe appeared in Camping It Up!.
A Trainer's Growlithe appeared in Curtain Up, Unova League! and Lost at the League!.
A Growlithe appeared in a flashback in Secrets From Out of the Fog!.
In Go, Go Gogoat!, a Growlithe was living at an unnamed island in the Decolore Islands.
A Growlithe appeared in BWS01.
A Growlithe appeared in Volcanion and the Mechanical Marvel.
Two Trainers Growlithe appeared in Alola to New Adventure!.
In First Catch in Alola, Ketchum-Style!, a Growlithe gave some Berries to a group of Pikipek.
Six Trainers' Growlithe appeared in A Shocking Grocery Run!.
A Trainer's Growlithe appeared in That's Why the Litten is a Scamp!.
Two Trainers' Growlithe appeared in To Top a Totem!.
In Racing to a Big Event!, a Trainer's Growlithe competed in the Pokémon Pancake Race.
A Trainer's Growlithe appeared in They Might Not Be Giants!.
Two Trainers' Growlithe appeared in Crystal-Clear Sleuthing!.
Two Trainers' Growlithe appeared in One Journey Ends, Another Begins....
Two Trainers' Growlithe appeared in Getting the Band Back Together!.
Two Trainers' Growlithe appeared in A Glaring Rivalry!. One of them reappeared in a flashback in A Masked Warning!.
A Trainer's Growlithe appeared in I Choose You!.
Four Trainers' Growlithe appeared in A Crowning Moment of Truth!, with one appearing in a flashback. They were among the Pokémon attending the Wela Fire Festival.
A Trainer's Growlithe appeared in Balloons, Brionne, and Belligerence!.
Two Trainers' Growlithe appeared in Alola, Kanto!.
A Trainer's Growlithe appeared in Faba's Revenge!.
A Trainer's Growlithe appeared in the banned episode SM064.
A Trainer's Growlithe appeared in Love at First Twirl!.
A Trainer's Growlithe appeared in Sours for the Sweet!.
A Trainer's Growlithe appeared in The Power of Us.
A Trainer's Growlithe appeared in All They Want to Do is Dance Dance!.
A Trainer's Growlithe appeared in The Shape of Love to Come!.
In I Choose Paradise!, a Growlithe was at the Pokémon Paradise Resort.
In Securing the Future!, a Trainer's Growlithe joined the rest of Alola in showering Necrozma with light so it could return to its normal form.
Two Trainers' Growlithe appeared in We Know Where You're Going, Eevee!.
A Trainer's Growlithe appeared in Got Meltan?.
A student's Growlithe appeared in Aiming for the Top Floor!.
Two Trainers' Growlithe appeared in League Offenders and Defenders!.
In Battle Royal 151!, a Trainer's Growlithe competed in the Battle Royal preliminary round of the Manalo Conference but ended up losing.
A Trainer's Growlithe appeared in Exhibition Unmasked!.
A Trainer's Growlithe appeared in Thank You, Alola! The Journey Continues!.
In Legend? Go! Friends? Go!, a Growlithe took part in a Raid Battle against a Lugia.
A Trainer's Growlithe appeared in Ash's fantasy in The Climb to Be the Very Best!.
A Trainer's Growlithe appeared in Raid Battle in The Ruins!.
A Trainer's Growlithe appeared in a fantasy in Caring for a Mystery!.
Two Trainers' Growlithe appeared in Toughing It Out!.
Two Trainers' Growtlithe appeared in Trade, Borrow, and Steal!.
A Trainer's Growlithe appeared in Making Battles in the Sand!.
In Pikachu Translation Check..., a Trainer's Growlithe was in a video.
A Trainer's Growlithe appeared in Getting More Than You Battled For!.
A Trainer's Growlithe appeared in Memories of a Warming Kindness!.
Two Growlithe appeared in Sleuths for Truth! in a fantasy, doing police work alongside Ash and Goh.
||Growlithe, a Puppy Pokémon of pleasant demeanor and great diligence. It drives enemies away with barks and bites.
||Growlithe, the Puppy Pokémon. While loyal to its master, the Growlithe will drive away enemies by barking and biting.
||Growlithe, the Puppy Pokémon. Growlithe are very loyal and won't move unless their Trainer commands it.
In File 2: Cubone, a Growlithe was at the Pokémon House in Lavender Town.
In The Chase, Looker used a Growlithe during the raid on the Viridian Gym. It accompanied Looker in his search for Giovanni and investigated the traces of explosives at the Gym's battlefield.
A Growlithe appeared in The Reawakening, during a flashback about the creation of the legendary beasts.