Creature wrapped around the four longest Across answers

Question:

Answer:

BOA

Length:

Similar Crossword Questions:

Things found in this puzzle's eight longest answers
Featured article hidden in this puzzle's nine longest answers
Angle irons graphically represented by four sets of black squares in this grid, and by letter formations starting in the four longest answers
HBO's "Inside the __" (and hidden theme in this puzzle's four longest answers)
They're found at the end of this puzzle's longest answers
Last letter in most plurals (but not in this puzzle's six longest answers, which are the only plurals in this grid)
They're found at the ends of this puzzle's three other longest answers
Driveway stuff (and word that's hidden in this puzzle's four longest answers)
Shades of it begin this puzzle's four longest answers
Some graffiti signatures (which were used to form this puzzle's four longest answers)
Ones in charge of a case ... or a literal hint to the eight other longest answers in this puzzle
Title that can precede the starts of the four longest Across answers
Word that goes after the start of and before the end of the five longest answers in this puzzle
European acme, and word hiding in this puzzle's 5 longest answers
Things hidden in this puzzle's eight longest answers
Bar found at the end of this puzzle's seven longest answers
Workweek start, or an apt title for this puzzle based on an abbreviation found in its five longest answers
Roman numeral hidden (in left-to-right order) in the four longest Across answers
It can follow the ends of this puzzle's eight longest answers
Place where the starts of this puzzle's four longest answers result in a penalty
Theme of this puzzle hidden in the seven other longest across answers
AprÃ¨s-___ (following a day on the slopes -- and, literally, where the first words of the four longest puzzle answers can be found)
Org. with members found at the ends of this puzzle's three longest answers
Govern, or word that can follow the first word of the four longest puzzle answers
Words of reproach, and a hint to how the four longest puzzle answers are formed