Possible Clues:

• Animals forming line, the opposite of 17, say
• This creature's eggs reportedly valuable
• Animals found by road here in London, it's said
• Ruminant offered line of plants, say, pulls up grass
• Delicate creature tethered, powerless always
• Small (antlered) mammal
• Some bucks
• Sound advice for boating companion, graceful thing
• Small cervid
• Antlered woodland creature