There's one at the beginning of each of this puzzle's four theme entries

Question:

Answer:

BOVINE

Length:

Similar Crossword Questions:

Make of six models that are subject to recall ... and being sent back inside this puzzle's theme entries
"Lid" in each of this puzzle's theme entries
They're hidden in this puzzle's theme entries
Many people get one in the summer (and so do this puzzle's theme entries)
Quadrennial occasion celebrated by this puzzle's theme entries
What this puzzle's theme entries have
What are featured in the theme entries of this puzzle
This puzzle's theme entries, e.g.
What each of this puzzle's theme entries contains
What this puzzle's theme entries take, vowel-wise
Period that ends Nov. 3rd, requiring a shift, and letters that shift in this puzzle's theme entries
Levels that are split in this puzzle's theme entries
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The three in each of this puzzle's theme entries
"Infections" inside this puzzle's theme entries
Like fish for fish & chips -- or this puzzle's four theme entries
Just making things up, or a synonym for a three-word phrase describing this puzzle's theme entries
Back to the beginning (like how this puzzle's theme goes)
Second of a pair of letters swapped six times in this puzzle's theme entries
What this puzzle's theme entries probably do?
First of a pair of letters swapped six times in this puzzle's theme entries
Like the four theme entries in this puzzle, as it were
What this puzzle's theme entries are
What the names in this puzzle's theme entries begin with
What the constructor had to do to create the theme entries in this puzzle (boyeee)