To sum up the anime it's in some arctic setting with a wild pack of dogs led by pack leader Gin that team up to rid the local Japanese villagers of these ravenous wild bears that have been encroaching on human territory(subtle environmental message?) and as civilian casualties climb the humans are powerless despite their terrible guns that fire only one round before you have to spend a minute to reload them.
The head honcho of these bears Akakabuto can be identified by a large scar that runs across one of his eyes and manages to miraculously evade bullets evading any attempt at being killed and himself managing to kill off many a bear hunter.
Gin's grandfather, Shiro who pops up in the 1st episode gets killed off by Akakabuto, and then Shiro's son ,Riki, who is also Gin's father on a separate occasion is thrown off by a cliff by Akakabuto, the evil head honcho bear and gets amnesia. He ends up leading a wild pack of dogs determined to kill off Akakabuto and his bear minions but all is in vain as Riki ends up meeting the same fate as his father, Shiro. It's a long line of bear hunting dogs.
Then we arrive to Shiro's wife dog who births a beautiful litter of pups one of which is the main character Gin. Gin goes on to developing a friendship with a human boy who I forget the name of as they both learn the art of bear hunting and the young boy masters the bow and arrow successfully killing off a bear himself at a young age. The series develops their friendship for around 7 episodes and you might think this is a promising human dog relationship that with amazing teamwork will somehow save the people from these bears, but no.
The series does a complete 180 when Gin, the dog meets the wild pack of dogs who were previously led by Riki, Gin's father who got killed by Akakabuto. Gin ends up joining the dogs leaving his human owner as if he never existed. 7 episodes of friendship making forgotten. He ends up making a cameo scene 15 episodes later but it's just the young boy realizing Gin's probably run away for a good reason and it's for the best that he sticks with the pack of wild dogs. It's already so sad.
The rest of the series involves the dogs slowly encroaching on bear territory and through the fighting they eventually reach the main bear stronghold which is this mountain where Gin lands the killing blow on the luminous bear Akakabuto by striking his eye where his scar is!
The sequel to this series Ginga Dengetsu Weed featuring Gin's son, Weed is named after the word for wild plant. The opening episode is about this mutated dog who escapes a lab and the old pack of wild dogs from the original series manages to kill off the mutated dog but not before having half the original cast dying who I had watched in the previous series. What?! What anime would do this to you. Truly heartbreaking.
The series continues on as Weed being crowned the new pack of the dogs since he's the son of Gin and all goes on a mission to find his father who has mysteriously disappeared.
The rest of the series involves battling with this other pack of wild dogs who want to rule the world or something and the head honcho of that leader of dogs is some evil dalmatian who has a really dark back story being cooped up in some wooden shed along with 70 something dogs with no nourishment resort to cannibalizing each other.
When Gin does get found out by his son, Weed, he's being held hostage and blah blah blah he can't move any of his legs and he becomes irrelevant. It's been an emotional roller coaster but the original cast as we know it has been made irrelevant from the sequel.
As you can expect the dalmatian dog's pack ends up losing and peace is restored in the dog world. You know, I realize I probably do build up too much of an emotional attachment to animated characters but in the end....this anime is the saddest I've watched so far.