The most common and most likely answer to this crossword clue is the 4 plus 3 letter word BEAR CUB
I've seen this crossword clue in Independent
B
E
A
R
C
U
B
More clues leading to the result BEAR CUB
- Grizzly infant to stand with inexperienced reporter
- Babe upset about rattle coming unstuck starts to get a little grizzly
- A grizzly infant?
- Put up with copper beginning to berate youngster?
- This youngster keen to play for Beckenbauer, perhaps …
- What this youngster’s mother did?
- Support group left off a young one
Buddy explains!

The straight part
We know that "little grizzly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case little grizzly = bear cub.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.