Crystals

Each of the clues gives an answer from 1-12 length.

CLUE	ANSWER
1. "Pretty Little Liars" antagonist	A
2. ChatGPT, e.g.	AI
3. Control surface on a wing	AILERON
4. Gore	AL
5. Tailor's adjustment	ALTERATION
6. Opposed to the major art movements of the 20th Century, like someone who won't go to MOMA	ANTIMODERNIST
7. Contradictions between two apparently equally valid principles	ANTIMONIES
8. Common contraction	AREN'T
9. Jeremy's role on Entourage	ARI
10. Characterized by deductive logic and an analytic inductive method	ARISTOTELIAN
11. Ceres is a large one	ASTEROID
12. Word before "to fight" in a John Paul Jones quote	BEGUN
13. Keg stopper	BUNG
14. Baby's mealtime sound	BURP
15. Roman god of the underworld	DIS
16. Magazine VIPs	EDITORS
17. The Living Planet	EGO
18. Contest participant	ENTRANT
19. Like the 2001 Eurovision winner	ESTONIAN
20. Pound of poetry	EZRA
21. Ancient game	GO
22. Colt creation	GUN
23. Solution to x2+ 1= 0	I
24. First-person pronoun	I
25. Latin clarifying phrase	IDEST
26. Tool for artificially impregnating cattle	INSEMINATOR
27. Converse or work together with	INTERACT
28. Acting within a molecule, like chemical bonds	INTERATOMIC
29. Applied Primate website	INTRANET
30. Complex, as a maze	INTRICATE
31. Country on the Caspian	IRAN
32. 5 X	L
33. Sitter's creation	LAP
34. More slothful	LAZIER
35. Sign of summer	LEO
36."_, how a rose..."	LO
37. Car mechanic's offering	LOANER
38. Actress Sophia	LOREN
39. Character played by Judi Dench and Ralph Fiennes	M
40. It actually has 11,842 lakes	MINNESOTA
41. Unit of force	N
42.1, 2, 3, etc. (possibly including 0)	N
43.Titular patient of a 2000 Stephen King novella	N
44. City where pizza was invented	NAPLES
45. Not far	NEAR
46. Country with a five-sided flag	NEPAL
47. First woman to serve as an MLB general manager	NG
48. -,logically	NOT
49. Parts of a scale	NOTES
50. Magazine that had the same cover model from April 2000 until September 2020	O
51. First word of two North American anthems	O
52.Mantra syllable	OM
53. Southernmost prov., for Canada Post	ON
54. Light blue Avenue in Monopoly	ORIENTAL
55. Drained of color •	PALE
56."Missa Pupae Marcelli" composer	PALESTRINA
57. Game-show regular	PANELIST
58. The Prospect of Whitby, e.g.	PUB
59. Logical basis for a course of action	RATIONALE
60. Come to understand, or gain as profit	REALIZE
61. A poetry reading, as in a class	RECITATION
62.Chihuahua of cartoons	REN
63.Striking back, as in a battle	RETALIATION
64.Site of rods and cones	RETINA
65.Hospital caregiver	RN
66.Part in a play	ROLE
67.Standerd coordinated by the International Bureau of Weights and Measures	SI
68.Competing team, in sports	SIDE
69.14-line poem	SONNET
70. Brittany	SPANIEL
71. Fats Waller piano style	STRIDE
72.Boston's subway	T
73.Painter of 'The Banjo Lesson"	TANNER
74.Open-faced sandwich	TARTINE
75.Massage target	TENSION
76.Acts of discontinuing, as products	TERMINATIONS
77.A whole bunch	TONS
78. PubliC transport option	TRAIN
79. Lasting a very short time	TRANSIENT
80. Rapper Scott	TRAVIS
81. Some Sopwiths and Fokkers	TRIPLANES
82. Knoxville-based New Deal org.	TVA
83.To Pimp a Butterfly track	U
84.Type of quark	UP
85. Like the Sahara	VAST
86. Scenic view	VISTA
87. First U.S. state to abolish slavery (abbr.)	VT
88. Scrabble player's Domino's order	ZA?
89. Mobutu's land	ZAIRE
90. Code for Cape Town's currency	ZAR

Each of these answer can fill a triangular grid by starting with a single letter and adding an additional letter for each row to make a new word when scrambled.

When sorted by size of the pyramid, the top of each spells the answer MOUNTAIN LION