Is it cancer? Please help

My dog has this bump on the side of her back. It feels like a pimple but it is a bit harder and more pointy. It has the same colour as her skin and it doesn’t seem to hurt when I touch it. It’s kinda hard to describe. I don’t know how long it’s been there but I’m just wondering if it could be cancer or if it’s just a lump of fat ( if that’s what you say?? ) my dad says its just a fat lump but I don’t know. Should we take her to the vet? if so can they get rid of it? Is it treatable? I’m worried😖😖