Yes! Dogs are able to eliminate when in their K9 Cart. They do not squat but tend to spread their legs and urine and feces will fall onto the ground missing the supportive frame of the wheelchair. Indoor cats of course will be unable to get into their litter boxes, so what we suggest is laying some plastic on the floor and covering it with kitty litter so the cat can roll over to it and void on the littler.
For those pets that need to have their bladder expressed it is easier to do that when they are upright in their wheelchair.
For small pets that use their K9 Cart in the house and are able to be in their cart for a long period of time, we do have an attachment designed by K9 Carts that can be put on the back of the cart called a Catch-it-all that will catch feces and urine in the case of a female dog. For Male dogs, we have Male wraps for the urine. For urine absorption sanitary pads will have to be placed both in the catch-it-all and inside the Male wrap. The Catch-it-all is especially helpful for cats and rabbits.