How do I train a dog that is too clingy?

A dog that is too clingy may be lacking a sense of security. The owner should avoid frequently boarding it at a friend’s house or pet shop, and can set aside a fixed time each day to play with the dog while letting it spend the rest of the time alone.

In addition, you can do separation training: choose a day off and leave the house frequently for about 10 minutes — to pick up a parcel, buy groceries, or get breakfast — and avoid being overly enthusiastic when leaving or returning. This teaches the dog that you will come back and will not abandon it, gradually building its independence.