Game ⇓ | Flavour Text ⇓ |
| Red/Blue | The female's horn develops slowly. Prefers physical attacks such as clawing and biting. |
| Yellow | When resting deep in its burrow, its thorns always retract. This is proof that it is relaxed. |
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| Gold | When feeding its young, it first chews and tender izes the food, then spits it out for the offspring. |
| Silver | It has a calm and caring nature. Because its horn grows slowly, it prefers not to fight. |
| Crystal | It has a docile nature. If it is threatened with attack, it raises the barbs that are all over its body. |
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| Ruby/Sapphire | When NIDORINA are with their friends or family, they keep their barbs tucked away to prevent hurting each other. This POKéMON appears to become nervous if separated from the others. |
| Emerald | When it is with its friends or family, its barbs are tucked away to prevent injury. It appears to become nervous if separated from the others. |
| FireRed | The female has a gentle temperament. It emits ultrasonic cries that have the power to befuddle foes. |
| Leaf Green | The female’s horns develop slowly. Prefers physical attacks such as clawing and biting. |
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| Diamond/Pearl | When it senses danger, it raises all the barbs on its body. These barbs grow slower than NIDORINO’s. |
| Platinum | When it senses danger, it raises all the barbs on its body. These barbs grow slower than NIDORINO’s. |
| Heart Gold | When feeding its young, it first chews the food into a paste, then spits it out for the offspring. |
| Soul Silver | It has a calm and caring nature. Because its horn grows slowly, it prefers not to fight. |
| Black | When it senses danger, it raises all the barbs on its body. These barbs grow slower than Nidorino's. |
| White | When it senses danger, it raises all the barbs on its body. These barbs grow slower than Nidorino's. |
