Andrew Parkinson / Hanuman / Northern Plains Grey Langur (Presbytis entellus) two youngsters chase each other up a sloping tree. Bandhavgarh National Park, India.

Chris Newbert / Galapagos Sea Lion (Zalophus wollebaeki) several youngsters playing in cave, Galapagos Islands, Ecuador

Andy Rouse / Cheetah (Acinonyx jubatus) mother carrying kill to shade for youngsters, with giraffes in background, Masai Mara National Reserve, Kenya

Benoit Stichelbaut / Sailing school with youngsters lined up in New Cat F2 catamarans. La Forêt Fouesnant, Brittany, France 1994.

Anup Shah / African elephant (Loxodonta africana) female stops to investigate possible water, leading playful youngsters, Masai Mara National Reserve, Kenya, December

Andy Rouse / Cheetah (Acinonyx jubatus) mother with caught young Thomson's gazelle (Gazella thomsoni) for youngsters to chase and learn hunting skills, Masai Mara, Kenya (non-ex)

Andy Rouse / Cheetah (Acinonyx jubatus) mother carrying young Thomson's gazelle (Gazella thomsoni) for youngsters to chase and learn hunting skills, Masai Mara, Kenya (non-ex)

Andy Rouse / Cheetah (Acinonyx jubatus) mother having caught young Thomson's gazelle (Gazella thomsoni) for youngsters to chase and learn hunting skills, Masai Mara, Kenya (non-ex)

Charlie Hamilton James / Common kingfisher {Alcedo atthis} youngsters begging food from adult (centre), England

Andy Sands / Harvest mouse {Micromys minutus} Two 2-week youngsters sitting on ear of corn, captive, UK

TJ Rich / African elephant youngsters playing in dried river bed (Loxodonta africana) South Luangwa NP, Zambia

Pete Cairns / Rabbit (Oryctolagus cuniculus) youngsters nuzzling each other on edge of burrow, Cairngorms NP, Scotland, UK.