They have fur.
Cows are mammals and mammals are not supposed to have scales.
No, squirrels are mammals, so they have fur, not scales.
no
No, wolves do not have scales. They are mammals and have fur instead, which helps insulate their bodies and protect them from the elements. Scales are typically found on reptiles and fish, not on mammals like wolves.
No, baboons do not have scales. They are mammals and have fur covering their bodies, which helps regulate their temperature and provides protection. Scales are characteristic of reptiles and some fish, not mammals like baboons.
No. Mammals do not have scales. Mammals have skin and hair. Some mammals feature scaly skin on some of their body parts such as their legs, but these are by no means scales. In the case of some animals, what may appear to be scales are in fact modified hairs. The pangolin is an example of this. Its scaly plates, like the scaly skin of reptiles, are made of keratin. Note that reptiles also do not have scales - just scaly skin. The only vertebrates with true scales are fish.
No. Echidnas are mammals, and mammals do not have scales. Echidnas have skin covered by thick fur, and spines growing throughout the thick fur.
...No, Otters are mammals and are covered in fur.
Possums are mammals, and are covered with hair.
Scales are to fish as hair is to mammals. Both scales and hair serve protective and insulating functions for their respective animals, adapting to their environments. Just as hair can provide warmth and sensory input for mammals, scales help fish with movement and protection in aquatic settings.
Lizards have scales, which are a specialized type of skin.
No they do not. Manatees are mammals. Only fish have scales.