I think it's two different storys, wrapped up as one.
Coastguards said another substance, described as "vegetable oil-like", was found washed up at Pedn Vounder beach, near the Minack Theatre, on Sunday.
They say the white gloopy stuff smelled like firelighters. Looks to me as though some paraffin may have reacted with something, and congealed.
Odd it would kill a dog though, you'd think it would just throw it up and carry on.