---
title: Cats often chatter their teeth at a bird they cannot reach; scientis… — How real cats hunt: stalking, waiting and pouncing · tree and pragmatics
description: Cats often chatter their teeth at a bird they cannot reach; scientists think it shows excitement or frustration, though no one is sure. Who acts: Cats, backs, scientists, cat. A sentence of the lesson «How real cats hunt: stalking, waiting and pouncing» of the biology course of Mova's primary school
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/119-how-real-cats-hunt/12/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / [How real cats hunt: stalking, waiting…](https://md.mova.elamur.ai/free/en/corpora/school/biology/119-how-real-cats-hunt/) / 12

# How real cats hunt: stalking, waiting and pouncing, sentence 12

<!-- .ven lang=en -->
Cats often chatter their teeth at a bird they cannot reach; scientists think it shows excitement or frustration, though no one is sure.

<!-- .vintro -->
**Who acts:** Cats, backs, scientists, cat, one · **What happens:** chatter, not reach, think, show, be · **To what, where:** teeth, bird, excitement · **Speech:** someone speaks here

<!-- .vabout -->
This is a sentence of the lesson «How real cats hunt: stalking, waiting and pouncing» of the biology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Cats, backs, scientists, cat), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:119-how-real-cats-hunt.lesson:12
# text = Cats often chatter their teeth at a bird they cannot reach; scientists think it shows excitement or frustration, though no one is sure.
# source = school lesson (ours)
# course = biology
# lesson = 119-how-real-cats-hunt.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change
1	Cats	cat	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	often	often	ADV	RB	_	3	advmod	_	_
3	chatter	chatter	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	teeth	tooth	NOUN	NNS	Number=Plur	3	obj	_	_
6	at	at	ADP	IN	_	8	case	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	bird	bird	NOUN	NN	Number=Sing	3	obl	_	_
9	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	12	nsubj	_	_
10	can	can	AUX	MD	VerbForm=Fin	12	aux	_	_
11	not	not	PART	RB	Polarity=Neg	12	advmod	_	_
12	reach	reach	VERB	VB	VerbForm=Inf	8	acl:relcl	_	_
13	;	;	PUNCT	,	_	15	punct	_	_
14	scientists	scientist	NOUN	NNS	Number=Plur	15	nsubj	_	_
15	think	think	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	parataxis	_	_
16	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	17	nsubj	_	_
17	shows	show	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	15	ccomp	_	_
18	excitement	excitement	NOUN	NN	Number=Sing	17	obj	_	_
19	or	or	CCONJ	CC	_	20	cc	_	_
20	frustration	frustration	NOUN	NN	Number=Sing	18	conj	_	_
21	,	,	PUNCT	,	_	26	punct	_	_
22	though	though	SCONJ	IN	_	26	mark	_	_
23	no	no	DET	DT	PronType=Neg	24	det	_	_
24	one	one	NOUN	NN	Number=Sing	26	nsubj	_	_
25	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	26	cop	_	_
26	sure	sure	ADJ	JJ	Degree=Pos	15	conj	_	_
27	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: none
- hedged: yes
- teacher: changed hedge=1

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **chatter** | present | Cats | backs's teeth |  |  |  | at a bird; often *property* | vn animal\_sounds-38 «NP V NP.theme PP.recipient PP.stimulus»: agent=Agent tooth=Theme at bird=Stimulus |
| 2 | **not** **reach** | can | backs *= back* | a bird *not said here* |  |  |  |  | vn body\_motion-49.2-1-1 «NP V NP ADV»: agent=Agent bird=Theme |
| 3 | **think** *speech: other* | present | scientists |  |  |  |  |  | vn consider-29.9-2 «NP V how S»: agent=Agent clause=Theme |
| 4 | **show** | present | cat | excitement or frustration |  |  |  |  | vn transfer\_mesg-37.1.1-1-1 «NP V NP.recipient»: agent=Agent excitement=Recipient |
| 5 | **is** | present | no one |  |  |  |  | sure *property* | tree rules |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

<!-- div src -->

**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:biology:119-how-real-cats-hunt.lesson:12`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

<!-- /div -->

<!-- pn -->
- ← previous: [How real cats hunt: stalking, waiting…, 11](https://md.mova.elamur.ai/free/en/corpora/school/biology/119-how-real-cats-hunt/11/)
- next →: [How real cats hunt: stalking, waiting…, 13](https://md.mova.elamur.ai/free/en/corpora/school/biology/119-how-real-cats-hunt/13/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/biology/119-how-real-cats-hunt/)

