Do you mean this:
It's call the Osbourne Bull, and it something to do with Spain.
The Osborne's black bull in Spain is a silhouetted image of a bull in semi-profile, and is regarded as the unofficial national symbol of Spain.
Osborne's black bull was a commercial trade mark of Osborne (producers of sherry and other spirits) but the wide presence of [huge advertisements showing] the bull all across Spanish roads made it a very popular symbol in the Spanish countryside.
However, when Spain outlawed billboards on national roads in the early 1990's, the black bulls were to be taken down. The Spaniards protested, as the lone bull towering along the roadside had become a national symbol. The final resolution was that the black bulls could remain but with no words (Osborne) on them.