If you're looking for manga similar to Ginga: The Last Wars, you might like these titles.
Stories revolving around the unforgettable dogs in the characters' lives -- the joy they bring and the sadness that comes with parting.
Yamato was born with a special mark on his forehead and was to become a fighting dog. Follow Yamato as he grows up and becomes stronger and stronger. Untill he ends up winning the championship which was the goal for the young dog.
“Ketsuinu” is a dog with a butt-like face, but nobody knows if it is a dog at all. The unidentified creature comes out of nowhere and quickly multiplies. Celebrities enjoy them as luxury pets, but in the end, the owners' faces turn into butts...
Tale of the Soviet space dog Laika, who after being launched into Space, takes her revenge on humankind.
Lassie was born in a petstore and sold numerous times, but had not found his true master. Lassie helps a store employee named Asuki and finds the right match. However, he is sold again before Asuki can take her home. Subsequently, Lassie has many adventures trying to be reunited with Asuki.
Tadashi’s father found a treasure map but before he could bring it home was assassinated by a secret society called The Good Night. He entrusts the map to a dog and her pups to get it to Tadashi, so that he can travel the Silk Road and find the treasure. Good thing the dogs have powers of their own…