Harengon

...but when the Rabbit actually took a watch out of its waistcoat-pocket, and looked at it, and then hurried on, Alice started to her feet, for it flashed across her mind that she had never before seen a rabbit with either a waistcoat-pocket, or a watch to take out of it, and burning with curiosity, she ran across the field after it, and fortunately was just in time to see it pop down a large rabbit-hole under the hedge.

Harengon, as one of the Amilakra, are sentient animals, and in this case, bunnies and rabbits. Looking exactly as such, but a bit bigger, upright and a little more humanoid. They are quick and reactive animals, the best of them even able through jump between universes, quick as they are. But these kinds of Herengon are merely legends to most, as they obviously never stay in one place long enough to track them down.

Racial traits

Ability Score Increase. Increase one ability score by 2, and increase a different one by 1, or increase three different scores by 1. Languages. You can speak, read, and write Common and one other language that you and your DM agree is appropriate for the character. Hare-Trigger. You can add your proficiency bonus to your initiative rolls. Leporine Senses. You have proficiency in the Perception skill. Lucky Footwork. When you fail a Dexterity saving throw, you can use your reaction to roll a d4 and add it to the save, potentially turning the failure into a success. You can't use this reaction if you're prone or your speed is 0. Rabbit Hop. As a bonus action, you can jump a number of feet equal to five times your proficiency bonus, without provoking opportunity attacks. You can use this trait only if your speed is greater than 0. You can use it a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.