A cougar cub being weighed at Salzburg Zoo, Austria. (File Photos: IC]
A young wild owl being measured, weighed and ringed, in the zoo in Arnhem, The Netherlands.
Elephant calf 'Uli' refusing to stand on a scale at the Wuppertal zoo in Wuppertal, Germany.
A Red-Ruffed Lemur called Cid being weighed at the London Zoo.
An eagle owl being measured, at the London Zoo.
A Malayan tiger cub being weighed at the Zoo in Prague, Czech Republic.