Once upon a time somebody called to Havrosha and asked whether he need a dog. He aggreed with a great pleasure.

And after one hour… The postman knocked to the Havrosha's door. He said:
- Did you order a dog?
- Yes, - he answered.
- Here you are, please.

And he gaved to Havrosha a box. A puppy jumped out of there. Havrosha named him Bulka immediately.