Mammoth Uncensored Word List:
33 words ending with og, 7 letters long

antifog antilog backlog birddog bulldog cantdog catalog catelog coondog corndog crannog datalog decalog demagog firedog hangdog hemagog homolog jigajog magalog megafog monolog moorlog overdog paralog peatbog pedagog roadhog sandhog semilog synagog theolog warthog