If a dog is so old that it's completely grey and you want to sell it as a year-old puppy or pretend that the old dodderer is only nine months old, then you must buy some silver nitrate, dissolve it and paint the dog black so that it looks quite new.
Txakurra zaharra eta ile urdinekoa denian, urtebeteko txakurtzat saldu nahi baduzu, edo, aitona gaixoa, bederatzi hilabetekotzat, zilarrezko fulminatoa erosi, disolbatu, eta beltzez pintatu behar duzu, gazte itxura emateko.