Three of the four group of words are alike in some manner. Select the odd group of words.

(Lizard, Crocodile, Jungle)

The logic followed here is :

Each of the groups generally consist of words that fall within the same category

(Truck, Scooter, Car)

These all are types of vehicles

(Lizard, Crocodile, Jungle)

Lizard and Crocodile are both reptiles , jungle is not reptile (odd)

(Lion, Leopard, Fox)

These all are types of mammals

(Pen, Pencil, Eraser)

They are all stationery items