Jax eats a lot

Jax has had a mad half hour eating this week some weeks he may not eat very much then another he doesnt want to stop. The weather ha been a bit cooler this week which will account for it when its hot he doesnt want to eat. He is fattening out slowly no  he is 16 months and they do tend to change about now and then again at 2 years. He is generally a lot more laid back  now than he was he still howls when the Police or Ambulance goes past with the siren on