'Mother's Day' in the animal world

Maternal love is the instinct of most animals in nature, when maternal animals spend all their love and protection for their newborn babies.

Mamitu gorilla, 30 years old, is satisfied with his newborn son Haiba in Zurich Zoo, Switzerland.

The new hippopotamus was born swimming in his mother's watch at the Tianjin Zoo, China.

Two elephants mother in the dry river Zambezi in Africa.

The gray sea bridge makes a mother's nest on Helgoland Island, Germany.

Naughty 4-month-old son Samaki naughty in the arms of his mother Shiba on the launch day at Taronga Zoo Sydney, Australia.

The female lion in Aalborg Zoo, Denmark, is taking one of her newborn babies in her mouth.

The baby lemur snuggles into the mother at Hagenbeck Zoo Hamburg, Germany.

Kekaimalu's mother dolphin happily plays with her newborn baby at Sealife Park in Honolulu, Hawaii.

The African giraffe is named Mas Sura cuddling at Kuala Lumpur Zoo, Malaysia.

Two one-month-old twin elephants play around the mother's feet at the elephant feeding center in Chitwan, Nepal.

Mother Tonya is very alert to protect her 6-week-old baby on the day of her debut at Hannover Zoo, Germany.

Shiva's new one-day camel expressed his affection for Kaveri's mother at the veterinary center in Mumbai, India.

The 3-week-old monkey is shy on his mother's shoulder at Olmense Olmen Zoo, Belgium.