This horse statue appeared in a number of Paramount TV shows, here in an early episode of Mannix.
(check out other horse statue posts on this site)
Someone wisely pointed out that some of them have opposite legs raised, suggesting a matched set. But here, the legs are the same as The Bradys horse.
I am guessing that these were all generic props, that one of them inadvertently made famous by being placed in the center of The Brady Bunch living room.