These playful baby elephants are showing high spirits as they struggle in the mud.
Plai Boon Rueng and Plai Phu Khao Thong are part of a breeding program to save critically endangered species.
They were born at the Royal Elephant Kraal in Ayutthaya, just north of the Thai capital Bangkok.
The center is currently home to more than 90 elephants, including 10 newborns.
One of those babies is Saen Laan, shown on the third day of his life.
Traditionally, elephants have a significant ceremonial role in Thailand and have a particularly close relationship with the king of this country.
Modern-day animals now participate in reenactments of ancient rituals associated with the monarchy.