It probably had lions at some point. It's famous for the Barbary Macaque or "Barbary Ape" (actually monkeys), which are the only European monkeys. Legend has it that during Spain's Great Siege during the American Revolution, a rather trope-heavy defence of the fortress and Britain's only major success of the war, Moroccan blockade runners opposed to Spanish power brought limes in their dhows... and monkeys. In this way the monkeys became symbols of British rule, and when during the Second World War the monkey population was in decline, it is said the Winston Churchill authorised Emergency Monkey Relief. Perhaps this is not true. But it should be. These days, the monkeys primarily steal food from tourists.