Obviously, our brains would still have evolved for intellectual capacity, and human activities, and we wouldn't be as strong or as big as other cats.
Because the same is true with our relation to primates.
But what would it be like to be a cat that evolved from the snow leopard the Panthera Uncia ?
To walk on four legs, thick fur, spots, be able to run at probably 30 miles per hour on average, and 35 or 40 miles per hour for an Olympic runner...
jump fairly high, about 6, or 7 feet in the air, and have a tail, and big cannines and decent sized claws,
AND be able to think logically, produce industrial products, drive cars, make and fly air planes, be doctors, and lawyers, and reason, and feel empathy, and learn in a classroom, and speak too ?