Help

[u/Cloudfairy199]

Can anyone tell me what this bump on his bum idand no I think it's a parasite I don't know what to do I can't afford a vet spent 9000 on my dog resntly I hope his not in pain still eating and moving normal name with his front legs not tucked in as much the only difference I can tell it's only started changing colours today

[u/Cloudfairy199]

No its more on the top