The use of miniatures goes back a long time. Science-fiction and monster movies have done this for years to show 'giant things' on the big screen. This, along with stop-motion effects, was the mainstay of old time cinema.
Cut ahead to the 1970s where people expected a little more. They did not get it. One of the greatest examples of this silliness is....
Night of the Lepus
This film about giant, killer rabbits is well-renowned amongst film buffs and fans of the absurd. Basically, a scientist tries to breed rabbits as gay so they will not overpopulate the desert. One of his first test subjects gets loose and starts humping. Soon, a whole army of giant bunnies is on the loose. This is one of their big scenes. See if you can spot what is a miniature.
They are so adorably-deadly, huh? You just want to hug them as they rip your arm off. They will stomp you to death with their giant, soft footpads.
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What do you mean 'this is a movie about giant rabbits?' Are you saying that this movie poster is intentionally vague to trick people? The thought of that is absurd. It's not like I own this movie or anything.