Ouchie!!

While out on our walk today poor Sully got over 30 of these spiky balls attached to his paws within seconds. He tried to bite them off himself but they were causing his mouth to bleed. I tried to help but kept pricking my fingers. So I carried him home and removed them all with the metal comb.
My poor boy must have swallowed a few of them as they re-appeared this evening (tmi). He appears to be himself so hopefully they haven't caused him any harm.