He’ll be waiting for me when I get home from work and he’ll come purring around my legs until I give him something to eat. Then he’ll curl up on the sofa or on my lap and go to sleep.	
He’s very well-behaved, although he does make a bit of a noise when the postman comes. But he never bites. He needs a lot of exercise of course. I have to walk him twice a day.	
He’ll come in without taking his shoes off and then he’ll throw his bag down on the floor and go straight on to the computer and start playing games. And he just will not tidy up after him. Every night I’ll have to go around picking up cars or soldiers or plastic bricks.	
She’s in the second year now and she’s doing very well, actually. She works very hard and she reads a lot too. She’s in the play this year. We’re going to see it.	
She’ll always be in first in the morning - so she can check up on the rest of us I suppose. And if you’re two minutes late, she’ll look at her watch and give you a look like a school mistress. 	
She gets up at five every morning without fail and goes for her walk, whatever the weather. She’s amazing for her age. She walks for an hour then she comes back and has breakfast with her friends.	
She sits opposite me and we get on fine. She’s a hard worker and you can rely on her to get things done. We’ve got quite a lot in common, so we often chat when we’re not busy.	
She’ll breeze in twenty minutes late and spend half an hour gossiping on the phone while I’m trying to get some work done. And she’ll always use my coffee cup without asking. I wish they’d sack her!	
They’d shout and scream late into the night – once or twice I was sure they were going to murder each other. The funny thing is, when you met them in the lift or on the stairs, they’d be very pleasant. They’d always say hello.	
He’d always wear exactly the same brown pullover and grey trousers. He’d come in five minutes late and he’d always spend another minute looking for his glasses. He was really boring and he’d drone on and on. But he was quite kind. If you hadn’t done your homework, he’d always let you off.	

Notes	

Cat	
These are tendencies. However, you could use present tenses and the meaning would be the same:

He’s always waiting for me when I get home from work and he comes purring around my legs until I give him something to eat. Then he curls up on the sofa or on my lap and goes to sleep.	
Dog	
You could use will for some of this without changing the meaning.

He’s very well-behaved, although he will make a bit of a noise when the postman comes. But he'll never bite. He needs a lot of exercise of course. I have to walk him twice a day.	
Son	
These are tendencies. However, you could use present tenses and the meaning would be the same:

He comes in without taking his shoes off and then he throws his bag down on the floor and goes straight on to the computer and starts playing games. And he never tidies up after him. Every night I have to go around picking up cars or soldiers or plastic bricks.	
Daughter	
These are facts rather than tendencies. You can't use will here.

She’s in the second year now and she’s doing very well, actually. She works very hard and she reads a lot too. She’s in the play this year. We’re going to see it.	
Boss	
These are tendencies. However, you could use present tenses and the meaning would be the same:
She's always in first in the morning - so she can check up on the rest of us I suppose. And if you’re two minutes late, she looks at her watch and gives you a look like a school mistress. 	
Elderly mother / grandmother	
Except 'She's amazing for her age', these are tendencies expressed here with the present tense. However, you could use will.

She'll get up at five every morning without fail and go for her walk, whatever the weather. She’s amazing for her age. She walks for an hour then she comes back and have breakfast with her friends.	
Colleague 	
The first part is fact, so you can't use will. The last clause is a tendency, so you could also use will.

She sits opposite me and we get on fine. She’s a hard worker and you can rely on her to get things done. We’ve got quite a lot in common, so we'll often chat when we’re not busy.	
Colleague 	
These are tendencies. However, you could use present tenses and the meaning would be the same:

She breezes in twenty minutes late and spends half an hour gossiping on the phone while I’m trying to get some work done. And she always uses my coffee cup without asking. I wish they’d sack her!	
Neighbours	
These are tendencies in the past. You could use past simple tense in some places although in the first sentence it would be rather unclear whether you meant one time or more than once. However,  'used to' is possible here:

They used to shout and scream late into the night – once or twice I was sure they were going to murder each other. The funny thing is, when you met them in the lift or on the stairs, they were always very pleasant. They always said hello.	
Teacher	
These are tendencies in the past. You could also use past simple in places but used to and /or frequency adverbs - always / usually - would make it clearer that you were talking about a habit:

He always wore exactly the same brown pullover and grey trousers. He used to come in five minutes late and then spend another minute looking for his glasses. He was really boring and he used to drone on and on. But he was quite kind. If you hadn’t done your homework, he always let you off.