What is the Nidoran line based on?

Question

Is there any real life creature that it is based on?

Answer 1

>Nidoran appears to be based on a porcupine, rabbit, mouse, or a hamster, as seen by their aggressive nature towards one another.
-Nidoran
>Nidoqueen shares traits of rhinoceroses, gorillas, rabbits and porcupines. The coverings on its chest and its lower abdomen collectively resemble a two-piece bikini worn by human females.
-Nidoqueen
>Nidoking shares traits of rhinoceroses, gorillas, rabbits and porcupines.
-Nidoking

Basically a mix of a few small creatures, then some parts ressembling rhinos and gorillas.

Comments

XD, my answer was definetly blown out of the water! XD

Answer 2

Nidoran/Nidorina
Possibly a Porcupine, rabbit, mouse or hamster.
Source: http://bulbapedia.bulbagarden.net/wiki/Nidoran♂_(Pokémon) and
http://bulbapedia.bulbagarden.net/wiki/Nidorina_(Pokémon)
Nidorino
Possibly a Rhino, Porcupine, rabbit, mouse, or hamster.
Source: http://bulbapedia.bulbagarden.net/wiki/Nidorino_(Pokémon)
Nidoking/Nidoqueen
Possibly a Rhino, gorrilla, rabbit, porcupine
Source: http://bulbapedia.bulbagarden.net/wiki/Nidoking_(Pokémon)
and http://bulbapedia.bulbagarden.net/wiki/Nidoqueen_(Pokémon)

I wouldnt call them any one specific animal but more of a Hybrid of a few to make an Apex Predator like Pokemon.

Answer 3

The Nidoran line is based on a combination of a porcupine, rabbit, mouse, and a hamster. Hope this helps!