Hi – good call going 1/72 for fantasy – I did too!
I have the airfix lions, and they're small even compared to other 1/72 scale lions, such as those in the Orion gladiators set.
The toob animals are ok, but the detail's a bit soft and the poses limited, so they're ok but not a perfect match-up for the accurate proportions of 1/72.
I'd also reccomend 28mm scale lions, as they give the 'heroic' scale of the lions you want as shown in your 1st post. There's a nice selection of 28mm animals at Ral Partha Europe, along with other animals that can be used well with 1/72 scale, as they're really 'true' 25mm – just a tad larger than 1/72, and look nicely epic while possessing the same realistic anatomy of 1/72:
These animals pictured below, however, are precicely 1/72 scale – I've got several sets for beast packs for my 1/72 barbarian and orc forces:
There's also this larger lion also from RPE:
all from here: ralparthaeurope.co.uk/shop
and North Star has a nice selection of 28mm animals, too: link
and here:
link
such as: