Here is a Maximum Card realised with a postcard acquired from the Singapore Night Safari Zoo featuring a group of small claw otters. The card is detached from a postcard booklet published by the Singapore Zoo. which was available from the Park's souvenir shop. There are 2 volumes available - one each for the Day and Night Parks.
- A maximum card realised with "threatened habitat - otter" stamp issued on 15.7.2010, FDI pictorial cancel @ Jerantut