That really depends on the Airline, and the regulations governing the country you're flying from, and which part of America you're flying to. Generally speaking most Airlines will not allow animals in hand luggage, they need to go in the hold. And you need to consider the quarantine regulations that apply at your destination, your puppy may not be allowed into America. It's best to check with the Airline before you book your ticket.
can we bring our ps3 on hand luggage
no
yes
Yes, an electric shaver maybe taken in hand luggage on Delta.
you can
No.
Yes. You actually can.
NO!
yes
No but you can put the handbag inside a larger bag which will have the rest of your hand luggage in. You can only normally take one bag per person.
Not as a carry-on
Provided they do not exceed the cabinet weight and size limit, in theory yes, speakers can be taken on a plane in hand luggage.