They have seen your pet, and are most aware of his condition.
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	3	nsubj	3:nsubj|10:nsubj	_
2	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	aux	3:aux	_
3	seen	see	VERB	VBN	Tense=Past|VerbForm=Part	0	root	0:root	_
4	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	5	nmod:poss	5:nmod:poss	_
5	pet	pet	NOUN	NN	Number=Sing	3	obj	3:obj	SpaceAfter=No
6	,	,	PUNCT	,	_	10	punct	10:punct	_
7	and	and	CCONJ	CC	_	10	cc	10:cc	_
8	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	10	cop	10:cop	_
9	most	most	ADV	RBS	Degree=Sup	10	advmod	10:advmod	_
10	aware	aware	ADJ	JJ	Degree=Pos	3	conj	3:conj:and	_
11	of	of	ADP	IN	_	13	case	13:case	_
12	his	his	PRON	PRP$	Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs	13	nmod:poss	13:nmod:poss	_
13	condition	condition	NOUN	NN	Number=Sing	10	obl	10:obl:of	SpaceAfter=No
14	.	.	PUNCT	.	_	3	punct	3:punct	_
