We also find pieces of Sydneys nails every day ; usually around his scratching post !! Perfectly normal you know !!
As to sweets , be careful !! It's not so good for their teeth , but is also bad for the intestines .... I used to let Sydney lick a bit of whipped cream , but now I never do that again !!! He got a really bad diarhea ; the vet ordered me to stop those sweets at once ....