Rodents, by definition, are mammals with incisor teeth that continuously grow, and they all have tails.
It is possible you are thinking of a different type of animal, or perhaps you are describing a specific type of rodent with some inaccuracies. Could you please provide more details about the animal you're thinking of?
For example:
* Where did you see this animal? (e.g., in your home, outside, in a specific region)
* What was its size approximately? (e.g., smaller than a mouse, bigger than a rat)
* Did it have any other distinguishing features? (e.g., color patterns, fur texture)
This information will help me understand what animal you are describing and provide you with a more accurate answer.