Puzzle

 ACROSS

  1 Big game species

  4 Lasting impression?

  8 Dog command that's the opposite of "Come!"

 12 Fallback option

 14 Finger-wagging phrase

 15 Place for a piercing

 16 Adjust the fit of

 17 Low female voice

 18 ___ place ("8," for "18")

 19 Baptism or wedding

 22 Lower digit

 23 Clever humor

 24 Exchanged

 27 Unofficial poll

 31 Foe

 32 Slangy pet name

 33 "___ volunteers?"

 35 Wolfed down

 36 Deduction on an IRS form

 40 ___ Wednesday

 42 Give in to gravity

 43 Night before

 44 Primitive fishing tool

 47 Faded, as fabric

 52 Became furious

 54 Golf benchmark

 55 Prefix related to mono-

 56 One half of a noted aviation team

 60 Move to tears, say?

 62 In the near future

 63 "Yup"

 64 Rubs the wrong way

 65 One of 52 in a deck

 66 ___ Dame

 67 Robin's residence

 68 Praising poems

 69 Comforting touch

DOWN

  1 Mama Cass

  2 Former's counterpart

  3 Proposal joint

  4 Suddenly become attentive

  5 Coca-___

  6 Tiny home invaders

  7 Hen's perch

  8 "Just Do It," for example

  9 Insensitive

 10 16th prez

 11 Hoped-for proposal answer

 12 Components

 13 Treatment for upper facial hair, informally

 20 Journalism basics

 21 "Where ___ you?"

 25 Lifesaving fig.

 26 Make blue, say

 28 Org. for lawyers

 29 Subarctic forest biome

 30 Sleep apnea doc

 34 Rodeo cry

 36 "Everything" pizza order

 37 Beyond rare?

 38 Infested, as with weeds

 39 Placed coins into

 40 Long-eared animal

 41 Business offering a 13-Down

 45 Put handcuffs on

 46 Cause to go "vroom"

 48 Enjoys a shopping spree

 49 "Why I ___ ..."

 50 Not injured

 51 Churchgoer's contribution

 53 Late '70s dance music

 57 Laundry unit

 58 What you might pass on

 59 All-day breakfast chain

 60 Storage container

 61 Valuable vein contents

Solution