I want to get a pet rat! help!?

here's the story. i have always had a dog since i was born and now that both our dogs had to get put down over the past years, i have no pets and it's lonely. my mom is very sad about both of our dogs. i really want to get another dog, but she doesn't want to. so i thought about a pet rat. i was looking... show more here's the story. i have always had a dog since i was born and now that both our dogs had to get put down over the past years, i have no pets and it's lonely. my mom is very sad about both of our dogs. i really want to get another dog, but she doesn't want to. so i thought about a pet rat. i was looking them up on the internet and fell in love with them!

i hear you should get a pair of same sex rats, which i want
to, but i would feel that i would give more attention to one
of them then the other. is it okay just to get one? and what
gender to you recommend?
what do rats eat?
how often to they eat?
how often do you bathe them?
do they smell?
are the friendly?
can you handle them a lot?
do they like to play?
where should i buy the rat?
what type of cage should i get?
what should i put in the cage?
can you walk them like a dog? haha.
and can you hold them and take
them outside to play?

i would really appreciate answers!
thank you to anyone that answers!
12 answers 12