Stray tomcat receiving a grand welcome - this pet needs care (10)

I believe the answer is:

tamagotchi

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'pet needs care' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'stray tomcat receiving a grand welcome' is the wordplay.
'stray' is an anagram indicator.
'receiving' means one lot of letters goes inside another.
'a grand' becomes 'ag' (I can't explain this - if you can you should give a lot more credence to this answer).
'welcome' becomes 'hi' (both are greetings).
'tomcat' anagrammed gives 'tamotc'.
'tamotc' going around 'ag' is 'tamagotc'.
'tamagotc'+'hi'='TAMAGOTCHI'

'this' acts as a link.

Can you help me to learn more?

I've seen this clue in The Independent.

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