A Humboldt penguin jump off scales during the annual weight-in at London Zoo in London, Britain August 24, 2016. REUTERS/Neil Hall - RTX2MU5N
A Humboldt penguin jump off scales during the annual weight-in at London Zoo in London, Britain August 24, 2016. REUTERS/Neil Hall - RTX2MU7V
Asiatic lions stand by a measuring ruler during the annual weight-in at London Zoo in London, Britain August 24, 2016. REUTERS/Neil Hall - RTX2MU9G
A red-kneed tarantula spider is held during the annual weight-in at London Zoo in London, Britain August 24, 2016. REUTERS/Neil Hall - RTX2MUBG
A zoo keeper weighs Humboldt penguins during the annual weight-in at London Zoo in London, Britain August 24, 2016. REUTERS/Neil Hall - RTX2MU81
An Asiatic lion stands by a measuring ruler during the annual weight-in at London Zoo in London, Britain August 24, 2016. REUTERS/Neil Hall - RTX2MU8L
A Sumatran tiger is enticed by meat during the annual weight-in at London Zoo in London, Britain August 24, 2016. REUTERS/Neil Hall - RTX2MU5I
A squirrel monkey sits on a scale during the annual weight-in at London Zoo in London, Britain August 24, 2016. REUTERS/Neil Hall - RTX2MUA5
The animal weigh in
London Zoo conducts its annual weigh in of the animals.