Do tigers belong to viviparous animals?

The gestation period of tigers is about 105 days, and each tiger gives birth to 1-5 cubs, usually 2 cubs. The newborn tiger cub weighs about 1 kg and suckles for 5-6 months. During this period, the tigress did not mate in estrus, so under natural conditions, the tigress can only reproduce once every 2-3 years. The female tiger is sexually mature at the age of 3, and the male tiger is later.