If there is blood in the urine, or the cat seems to be in pain, then that is also a good indicator.
1	If	if	SCONJ	IN	_	3	mark	3:mark	_
2	there	there	PRON	EX	_	3	expl	3:expl	_
3	is	be	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	24	advcl	24:advcl	_
4	blood	blood	NOUN	NN	Number=Sing	3	nsubj	3:nsubj	_
5	in	in	ADP	IN	_	7	case	7:case	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	7:det	_
7	urine	urine	NOUN	NN	Number=Sing	3	obl	3:obl:in	SpaceAfter=No
8	,	,	PUNCT	,	_	3	punct	3:punct	_
9	or	or	CCONJ	CC	_	12	cc	12:cc	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	11:det	_
11	cat	cat	NOUN	NN	Number=Sing	12	nsubj	12:nsubj|16:nsubj:xsubj	_
12	seems	seem	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	3:conj:or|24:advcl	_
13	to	to	PART	TO	_	16	mark	16:mark	_
14	be	be	AUX	VB	VerbForm=Inf	16	cop	16:cop	_
15	in	in	ADP	IN	_	16	case	16:case	_
16	pain	pain	NOUN	NN	Number=Sing	12	xcomp	12:xcomp	SpaceAfter=No
17	,	,	PUNCT	,	_	24	punct	24:punct	_
18	then	then	ADV	RB	PronType=Dem	24	advmod	24:advmod	_
19	that	that	PRON	DT	Number=Sing|PronType=Dem	24	nsubj	24:nsubj	_
20	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	24	cop	24:cop	_
21	also	also	ADV	RB	_	24	advmod	24:advmod	_
22	a	a	DET	DT	Definite=Ind|PronType=Art	24	det	24:det	_
23	good	good	ADJ	JJ	Degree=Pos	24	amod	24:amod	_
24	indicator	indicator	NOUN	NN	Number=Sing	0	root	0:root	SpaceAfter=No
25	.	.	PUNCT	.	_	24	punct	24:punct	_
