Here's what rhymes with catstail.
pale tail tale jail bail stale bale dale pail detail male scale fail mail sale sail trail nail rail veil frail gale hail shale whale vale wail snail flail hale braille kale faille wale hightail avail entail email assail curtail quail quale bewail derail pigtail topsail grail impale taffrail bobtail prevail travail inhale exhale ponytail unveil foresail wassail pellmell carrell gunwale mainsail countervail martingale monorail swallowtail hangnail tattletale lugsail fingernail nonpareil