an object states and behaviour are two different things yet like to one another please justify it.
Answers
My problem with that passage is that when describing state its mixes attributes there too. For instance, the name and color of a dog are its attributes, while it being hungry or thursty are its states.
So in my opinion it's more accurate to break the characteristics of objects into three parts: attributes, states and behaviors.
Sure, when translating this into a programming language I can see that the three-fold partition becomes a two-fold one, because both attributes and states will be stored into fields/variables, while behaviors will be store into methods/functions.
But conceptually speaking it makes more sense to have the 3 things separate.
Here's another example: consider a lamp. Saying that both the lamp size and whether or not it's turned on are states is a stretch in my opinion. The lamp size is an attribute, not a state, while it being turned on or off is a state.