With a blade length of 155mm and an overall length of around 270mm I wouldn't call it a small knife. In fact most of the usual criticism is that its too large to be practical. Maybe people are confused by the many clones and /or the Puma miniature version.

Specification from the Puma (Germany) website:
Blade length: 155 mm
Blade thickness: 5 mm
Total length: 10-5/8 "
Knife weight: 240 g
Scales: staghorn
Bolster: aluminium
Steel / hardness: 1.4116 / 55-57 HRC
Sheath: leather
Design: PUMA

ps. I don't own one, nor have I use one. As such I can't comment on how practical they are.