In animals, infanticide involves the intentional killing of young offspring by a mature animal of the same species. Animal infanticide is studied in zoology, specifically in the field of ethology. Ovicide is the analogous destruction of eggs. The practice has been observed in many species throughout the animal kingdom, especially primates but including microscopic rotifers, insects, fish, amphibians, birds and mammals. Infanticide can be practiced by both males and females.
Lion cubs may be killed by males replacing other males in the pride.
Jacana jacana females carry out infanticide.
The Black-tailed prairie dog (Cynomys ludovicianus)
Damselfish may eat their own offspring.
Semnopithecus is a genus of Old World monkeys native to the Indian subcontinent, with all species with the exception of two being commonly known as gray langurs. Traditionally only the species Semnopithecus entellus was recognized, but since about 2001 additional species have been recognized. The taxonomy has been in flux, but currently eight species are recognized.
Semnopithecus
Young gray langur at Nagarhole National Park, Mysore
Hanuman langur in Nandankanan Zoological Park in Bhubaneshwar
Gray langur