- Karenin did not like the move to Switzerland. Dogs don't like change, because time for them is circular, not linear.
- Karenin helped Tereza to hold on, because the dog was weaker than she, and she felt she needed to take care of him.
- One day, a woman calls their flat looking or Tomas, while he is at work. Tereza doesn't know who the woman is. She realizes it could just be a secretary or something insignificant, but it's too much for her. She can't bear being in a foreign country, dependent totally on Tomas, having nowhere to turn should he abandon her.
- She decides that she is too weak to live with Tomas, and so that's why she returns to Prague.