The most common and most likely answer to this crossword clue is the 9 letter word MICROCHIP
I've seen this crossword clue in The Times
M
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More clues leading to the result MICROCHIP
- Tiny brain? Reptile with it going after half of mine!
- Implant in animal? Note reptile with it
- Animal implant — note reptile with it
- Circuit in which big road takes small reptile with it
- Mike switched my vessel’s identification device
- Very small surface flaw may identify setter perhaps
- Accompaniment to minute steak? You may find it inside pet!
Buddy explains!
The straight part
We know that "Implant in animal" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case implant in animal = microchip.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.
What does MICROCHIP mean?
MICROCHIP noun- Integrated circuit; microprocessor.
- To fit (an animal) with a microchip.