NO! a hog is a pig. A hog is a mammal. A duck is a water bird. A BIRD! NOT A PIG!
A hog is not a pig when the hog isn't domestic.
The head of a hog
A wild hog can have many to no tusks. This depends on how old the hog is.
is meaner than a wild hog
It is hog itself.
The hog that has tusks is the warthog.
hound dog hog
Warthog, not Wort Hog. It's a wild pig, as the "hog" part might suggest. See here: http://www.answers.com/topic/wart-hog
A groundhog would hog as much ground as a groundhog COULD if a groundhog could hog ground.
A person can train a hog dog by taking them out hunting. This allows the dog to pick up the hog's scent and to hold the hog until the hunter arrives.
Or: How much ground would a ground hog hog if a ground hog would hog ground?
Oh, dude, the possessive form of "hog" is "hog's." Like, you just add an apostrophe and an "s" at the end. It's like saying, "That hog's bacon is delicious," or "I can't believe that hog's mud bath cost more than my spa day."