It's fine - just make sure that the room the cage is in is kept warm.
1-2	It's	_	_	_	_	_	_	_	_
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	3:nsubj	_
2	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	3:cop	_
3	fine	fine	ADJ	JJ	Degree=Pos	0	root	0:root	_
4	-	-	PUNCT	,	_	3	punct	3:punct	_
5	just	just	ADV	RB	_	6	advmod	6:advmod	_
6	make	make	VERB	VB	Mood=Imp|VerbForm=Fin	3	parataxis	3:parataxis	_
7	sure	sure	ADJ	JJ	Degree=Pos	6	xcomp	6:xcomp	_
8	that	that	SCONJ	IN	_	16	mark	16:mark	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	10:det	_
10	room	room	NOUN	NN	Number=Sing	16	nsubj:pass	16:nsubj:pass|17:nsubj:xsubj	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	12:det	_
12	cage	cage	NOUN	NN	Number=Sing	14	nsubj	14:nsubj	_
13	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	14	cop	14:cop	_
14	in	in	ADP	IN	_	10	acl:relcl	10:acl:relcl	_
15	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	aux:pass	16:aux:pass	_
16	kept	keep	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	7	ccomp	7:ccomp	_
17	warm	warm	ADJ	JJ	Degree=Pos	16	xcomp	16:xcomp	SpaceAfter=No
18	.	.	PUNCT	.	_	3	punct	3:punct	_
