Bog is a hamster who appears in Hamtaro: Ham-Ham Heartbreak in Wildwoods.
When Hamtaro and Bijou first meet Bog, he traps Hamtaro in a cage thinking he is a bad hamster like the one he encountered earlier. Upon realizing his mistake, he frees Hamtaro. Throughout the player's time in Wildwoods, Bog will teach Hamtaro and Bijou Hamchat and help them out when they're in trouble.
In a later side quest, Bog is looking for a "hot spring egg". Once Hamtaro finds this egg, he can give it to Bog and it will hatch, revealing a little duck. In addition to the duck, Bog lives with a talking monkey (simply known as "Monkey") that the player meets earlier in the game.
- Bog seems to be a parody of Tarzan, as he speaks with poor grammar and seems to get along better with animals outside of his own species.