If they're going kinda slow and like fake biting (not biting as hard as they can), and fake scratching (not hitting as hard as they can with their paws) then they're playing.
1	If	if	SCONJ	IN	_	4	mark	4:mark	_
2-3	they're	_	_	_	_	_	_	_	_
2	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	4:nsubj|10:nsubj	_
3	're	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux	4:aux	_
4	going	go	VERB	VBG	Tense=Pres|VerbForm=Part	39	advcl	39:advcl:if	_
5	kinda	kinda	ADV	RB	_	6	advmod	6:advmod	_
6	slow	slow	ADV	RB	_	4	advmod	4:advmod	_
7	and	and	CCONJ	CC	_	10	cc	10:cc	_
8	like	like	INTJ	UH	_	10	discourse	10:discourse	_
9	fake	fake	ADJ	JJ	Degree=Pos	10	compound	10:compound	_
10	biting	bite	VERB	VBG	Tense=Pres|VerbForm=Part	4	conj	4:conj:and|39:advcl:if	_
11	(	(	PUNCT	-LRB-	_	10	punct	10:punct	SpaceAfter=No
12	not	not	PART	RB	_	13	advmod	13:advmod	_
13	biting	bite	VERB	VBG	VerbForm=Ger	10	advcl	10:advcl	_
14	as	as	ADV	RB	_	15	advmod	15:advmod	_
15	hard	hard	ADV	RB	Degree=Pos	13	advmod	13:advmod	_
16	as	as	SCONJ	IN	_	18	mark	18:mark	_
17	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	18	nsubj	18:nsubj	_
18	can	can	AUX	MD	VerbForm=Fin	15	advcl	15:advcl:as	SpaceAfter=No
19	)	)	PUNCT	-RRB-	_	10	punct	10:punct	SpaceAfter=No
20	,	,	PUNCT	,	_	23	punct	23:punct	_
21	and	and	CCONJ	CC	_	23	cc	23:cc	_
22	fake	fake	ADJ	JJ	Degree=Pos	23	compound	23:compound	_
23	scratching	scratch	VERB	VBG	Tense=Pres|VerbForm=Part	10	conj	10:conj:and	_
24	(	(	PUNCT	-LRB-	_	23	punct	23:punct	SpaceAfter=No
25	not	not	PART	RB	_	26	advmod	26:advmod	_
26	hitting	hit	VERB	VBG	VerbForm=Ger	23	advcl	23:advcl	_
27	as	as	ADV	RB	_	28	advmod	28:advmod	_
28	hard	hard	ADV	RB	Degree=Pos	26	advmod	26:advmod	_
29	as	as	SCONJ	IN	_	31	mark	31:mark	_
30	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	31	nsubj	31:nsubj	_
31	can	can	AUX	MD	VerbForm=Fin	28	advcl	28:advcl:as	_
32	with	with	ADP	IN	_	34	case	34:case	_
33	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	34	nmod:poss	34:nmod:poss	_
34	paws	paw	NOUN	NNS	Number=Plur	26	obl	26:obl:with	SpaceAfter=No
35	)	)	PUNCT	-RRB-	_	23	punct	23:punct	_
36	then	then	ADV	RB	PronType=Dem	39	advmod	39:advmod	_
37-38	they're	_	_	_	_	_	_	_	_
37	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	39	nsubj	39:nsubj	_
38	're	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	39	aux	39:aux	_
39	playing	play	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	0:root	SpaceAfter=No
40	.	.	PUNCT	.	_	39	punct	39:punct	_
