From 11.5 Myh onwards
Range: Open habitats, mainly grasslands with scattered shrubs and trees.
A 10 ft tall species (around 3m) has low hair density to prevent overheating.
Walkers are all exclusively large, social rabbits evolved from an early skipping rabbit that can walk gracefully on their hind feet, plantigrade typically when standing or moving slowly, switching to digitgrade when some speed is required. Most walkers are also capable of quadrupedal movement, though to keep their large slashing and hooking claws sharp, they walk on their knuckles with their front limbs when not in any hurry.
That said they are not as fast as other species even on two legs and rely on group intimidation and their claws to defend themselves more than they rely on trying to escape. The most vulnerable walking rabbit is a solitary one. Standing with their backs to each other, they can be lethal to any predator that tries to attack. Even if a big cat could get a kill in, once the walkers are alert the risk of retaliation injury makes it foolish to try.
Many species have exposed skin and might look hairless on the lower half/back end, though they do have a low density of long wiry hairs that direct heat away from the body. These are typically the largest species (around 10ft tall as adults) while smaller species retain a short, light insulating coverage for colder nights.
They produce fewer, more developed offspring, ranging typically between 2 and 4, though 1 by itself isn't too unheard of either. Infants are less vulnerable at birth than their ancestors, with eyes opening in hours and knuckle crawling being attempted almost immediately. They are also born with more hair and develop a full body of fluff. But this time is still exceedingly dangerous for them, as mothers move around less (and thus can't keep up with an emergency group move without abandoning), and the babies stay on the ground most of the time as they are too small for her awkward claws to grasp. She focuses on keeping them shaded at day, warm at night, licked clean and on making milk off her body fat to nurse them with, as in just a few days they gain the strength and body mass to be carried by their mother and to hold on tight.
Grasping has become important to them. First, to pull down and bend branches from trees, making more fruit or foliage accessible, and sometimes to pick individual fruits themselves. Secondly, the previously mentioned need to grasp their mother during infancy, or to carry babies as a parent. In their rabbit ancestors grasping was not natural, but for walking rabbits it's needed so early in life it's become soldered into their framework. They can even, slowly and carefully, climb a tree if there are accessible lower branches. This opens more of a bounty of fruit and foliage, and also gives them a more obscure place to sleep. Younger individuals benefit more from being able to scale trees as an adult's body weight limits them only to the thickest and most robust branches.