They are not sacred like in India 🇮🇳. It was more like a joke but this is the why:

In Cuba, beef consumption is restricted due to government regulations protecting cattle. Killing a cow without authorization can lead to severe penalties, as the government prioritizes dairy production over meat. This policy stems from historical events like the nationalization of land after the Cuban Revolution and the impact of Hurricane Flora in 1963, which reduced cattle numbers. While beef is available in some tourist locations, it remains scarce for most Cuban citizens.
Nowadays, it’s more open. You can find it in some markets. I guess Things are changing for the cows 😂