Why do some animals prefer canned food to kibbles?
The appeal of canned foods is linked to their moisture content, which reinforces their smell and is particularly pleasing to cats. For cats, the texture of canned food is more similar to that of prey. This attraction to canned food can be used to make kibbles more acceptable, by mixing with a little canned food.
Should kibbles be different for young animals and adults?
Yes, first in response to different nutritional needs, but also because palatability factors change with age. Thus, the kibble is smaller and softer for puppies and kittens than for adults.