Appositive phrase?

Geez, I think so. (I'd be more inclined to call it a parenthetical expression without parentheses.)

I'm not really an expert on these. I don't usually see them at the end, but I can't say why not.

They usually represent the thing they stand for in a nominal way (rather than adjectival), so that gramatically, one could replace the other. I don't think this works in your exampl

hi dear

yes I think it is right

but I would like to add that it has something of abbreviation

this is because it is spoken language

the sentence in full

I like your dogs,they are so cute.

thanks alot

mohzayatI like your dogs,they are so cute.

Hi, mohzayat.
This amounts to a "comma splice." It needs either a conjunction or a semicolon.

I like your dogs because they are so cute.

I like your dogs; they are so cute.

AvangiI think I've read that the appositive must be a noun or a noun phrase. I think that's what my dictionary says, in fact.

An appositive is a re-naming or amplification of a word that immediately precedes it. (An appositive, then is the opposite of an oppositive.) Frequently another kind of phrase will serve in apposition.

We had a poster (eddie) who spent a lot of time delving into appositives, pretty much on his own. I recall that the term "noun phrase" seemed ambiguous at times.
We name phrases sometimes for the type of word that "fronts" them (heads them), and sometimes for the way the phrase functions as a whole.
So if an infinitive phrase functions as subject of the clause/sentence, you can ca

An appositive is a noun or pronoun placed beside another noun or pronoun to identify or describe it.

I think you can read more here: http://grammarkit.blogspot.com/2012/12/appositive-phrase.html