Which kind of Vaccum cleaner should i use for my house? I have three pets, so kindly mention a solution, if it smells of my dog.

SOURCE: Vacuum cleaner smells

A rubber smell usually indicates a belt slipping. Rubber belts stretch after a short while and will slip on the brush roll under load. Check also to make sure that the brush roll is turning freely.

SOURCE: vaccum Cleaner

you probably broke the belt so check that. if the mains cord is damaged, you should replace it

SOURCE: as mention

a little always make sure your filters are clean.but the biggest problem will be with the belt and the brush roller.if it smells like wires burning then its probably the motor .reach up under the front where the roller is but unplug first and see if you can turn the roller by hand.if it turns real freely then the belt is bad.there should be a little drag o the roller when you turn it. i would take the bottom open depending on what kind of vacuum you have and take the brush roller out and clean it real good.holding the brrush try turning the ends and see if they turn easy,if not there is probably carpet strands or hear wrapped around it in the inside of the ends,if you can't turn the roller you need to buy a new roller.if its just the belt replace the belt but before you do clean the motor shaft usually when a belt goes bad there is burnt rubber still on the shaft ,if you don't clean the shaft your new belt will not last long

SOURCE: eureka vacuum cleaner

That means that the belt is starting to wear. When the belt starts to stretch it can't turn the roller brush against the resistance of the carpet and therefore doesn't pick up well. You simply need to change the belt. Here is a link to the belt you need and to the manual:

Eureka 2961AVZ Belts

Eureka 2961AVZ Owner's Guide (3.4 KB download)

SOURCE: Miele Vacuum Cleaner - burning smell / motor won't stay on

check brush the belt may have popped off and is binding or brush is binding clean brush of any debris thread/hair wrapped binding brush and check and or replace belt