Why can’t decorative breeds of dogs and pigeons survive without humans?

As a result of selection, some individual traits are often enhanced to such an extent that the life of such animals is impossible in the wild and without human help. For example, many decorative dog breeds on the street will freeze and die due to insufficient coat. Decorative breeds of pigeons are most often flightless and unsportsmanlike, do not know how to navigate in the wild, which is why they die.