The Detroit Zoo this week announced the birth of three lion cubs to first-time mom Amirah, a 9-year-old African lioness housed at the zoo.

"She has been wonderfully calm, attentive and nurturing, spending her days bonding closely with her little ones in a cozy, quiet den," the zoo said in a social media post on Facebook .

For now, Amirah, who had the litter Nov. 23-24, and her cubs will remain in the zoo's den, according to Detroit Zoo officials, and out of public view. Zoo officials say the cubs may be visible to guests in a few months, once they are mobile and ready to explore larger spaces.

"African lions are vulnerable to extinction and endangered in some regions due to habitat loss, declining prey, disease and human-wildlife conflict. Welcoming these cubs is not only heartwarmin

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