If space is minimal, or you are keeping him in there to be kept away from other pets, then I can understand why you would choose to keep him there.
1	If	if	SCONJ	IN	_	4	mark	4:mark	_
2	space	space	NOUN	NN	Number=Sing	4	nsubj	4:nsubj	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	4:cop	_
4	minimal	minimal	ADJ	JJ	Degree=Pos	24	advcl	24:advcl:if	SpaceAfter=No
5	,	,	PUNCT	,	_	9	punct	9:punct	_
6	or	or	CCONJ	CC	_	9	cc	9:cc	_
7	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	9	nsubj	9:nsubj	_
8	are	be	AUX	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	9	aux	9:aux	_
9	keeping	keep	VERB	VBG	Tense=Pres|VerbForm=Part	4	conj	4:conj:or|24:advcl:if	_
10	him	he	PRON	PRP	Case=Acc|Gender=Masc|Number=Sing|Person=3|PronType=Prs	9	obj	9:obj	_
11	in	in	ADP	IN	_	12	case	12:case	_
12	there	there	ADV	RB	PronType=Dem	9	obl	9:obl:in	_
13	to	to	PART	TO	_	15	mark	15:mark	_
14	be	be	AUX	VB	VerbForm=Inf	15	aux:pass	15:aux:pass	_
15	kept	keep	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	9	advcl	9:advcl:to	_
16	away	away	ADV	RB	_	15	advmod	15:advmod	_
17	from	from	ADP	IN	_	19	case	19:case	_
18	other	other	ADJ	JJ	Degree=Pos	19	amod	19:amod	_
19	pets	pet	NOUN	NNS	Number=Plur	16	obl	16:obl:from	SpaceAfter=No
20	,	,	PUNCT	,	_	24	punct	24:punct	_
21	then	then	ADV	RB	PronType=Dem	24	advmod	24:advmod	_
22	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	24	nsubj	24:nsubj	_
23	can	can	AUX	MD	VerbForm=Fin	24	aux	24:aux	_
24	understand	understand	VERB	VB	VerbForm=Inf	0	root	0:root	_
25	why	why	ADV	WRB	PronType=Int	28	advmod	28:advmod	_
26	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	28	nsubj	28:nsubj|30:nsubj:xsubj	_
27	would	would	AUX	MD	VerbForm=Fin	28	aux	28:aux	_
28	choose	choose	VERB	VB	VerbForm=Inf	24	advcl	24:advcl	_
29	to	to	PART	TO	_	30	mark	30:mark	_
30	keep	keep	VERB	VB	VerbForm=Inf	28	xcomp	28:xcomp	_
31	him	he	PRON	PRP	Case=Acc|Gender=Masc|Number=Sing|Person=3|PronType=Prs	30	obj	30:obj|32:nsubj:xsubj	_
32	there	there	ADV	RB	PronType=Dem	30	xcomp	30:xcomp	SpaceAfter=No
33	.	.	PUNCT	.	_	24	punct	24:punct	_
