# Yorkshire Terrier

> According to allpets.ai data | Source: allpets.ai

## Basic Information
| Field | Value |
|---|---|
| Species | Dog |
| Origin | United Kingdom |
| Size Category | Small |

## Vital Statistics
| Metric | Value |
|---|---|
| Weight Range | 1.81–3.18 kg |
| Height Range | 17.78–20.32 cm |
| Lifespan | 11–15 years |
| Puppy/Kitten Stage Ends | 12 months |
| Senior Age Threshold | 10 years |

## Puppy/Kitten Development
- **Neonatal Weight**: 70–155 g
- **Growth Notes**: Monitor for hypoglycemia in neonates and toy breeds. Watch for signs of portosystemic shunt and tracheal collapse. Prone to dental disease.
- **Vaccine Schedule**: {"start_weeks": 6, "series_count": 3, "core_vaccines": "CDV; CPV-2; CAV-2; Rabies", "socialization_end_weeks": 16}

## Adult Preventive Care
- **Exercise Needs**: Moderate
- **Grooming**: High
- **Annual Exam Focus**: Dental evaluation; Patellar palpation; Tracheal auscultation; Blood glucose check
- **Routine Care**: Senior Yorkies are highly prone to severe dental disease, tracheal collapse, and osteoarthritis from patellar luxation. Management priorities include regular dental cleanings, weight control, and using a harness instead of a collar.

## Health Predispositions
| Condition | Onset Stage | Risk | Hereditary | Screening |
|---|---|---|---|---|
| Hypoglycemia | Juvenile | High | No | No |
| Patellar Luxation | Adult | High | No | No |
| Tracheal Collapse | Senior | High | No | No |
| Autoimmune Thyroiditis | Adult | High | Yes | Yes |
| Legg-Calve-Perthes | Adult | High | Yes | Yes |
| Hip Dysplasia | Adult | High | Yes | Yes |
| Eye Anomalies | Adult | High | Yes | Yes |

## Obesity Management
- **Risk Level**: Moderate
- **Ideal BCS**: 5/9
- **Visual Cues**: Ribs easily felt but not seen; gentle narrowing behind ribs from above; slight tummy tuck from side. No thick fat padding.
- **Daily Activity Target**: 45 minutes
- **Caloric Formula**: {"daily_kcal_per_kg": 60, "RER_factor": 70, "activity_multiplier": 1.6}

## Breeding & Genetics
- **Litter Size**: 2–5
- **Dystocia Risk**: Low
- **CHIC Required Tests**: ACVO Eye Exam; Patellar Luxation
- **Recommended DNA Tests**: Degenerative Myelopathy, DM (SOD1A); Progressive Retinal Atrophy, prcd; Hyperuricosuria and Hyperuricemia or Urolithiasis, HUU (SLC2A9); Primary Lens Luxation (ADAMTS17)

## Behavioral Ethogram
- **Locomotion**: Brisk trotting; Zoomies/FRAPs; Quick darting movements; Pouncing; Play bow
- **Social**: Leaning against owner; Following owner from room to room; Play solicitation; Jumping up to greet; Licking faces/hands
- **Comfort**: Self-grooming/licking paws; Circling before lying down; Stretching (play bow stretch); Shaking off; Yawning
- **Stress/Displacement**: Lip licking; Yawning; Shaking/trembling; Pacing; Avoidance/turning away
- **Breed-Specific**: Ratting/hunting pounce; Alert barking at novel stimuli; Digging/burrowing in blankets; Tenacious tugging

## Vocalization Baseline
- **Types**: Bark (alert); Bark (play); Whine; Growl; Yip
- **Frequency Range**: 1000-3000
- **Tendency**: High
- **Primary Modality**: Primarily Vocal
- **Tail Signals**: High wag = confident/excited; Low tuck = fearful/anxious; Stiff/flagging = alert/aroused; Relaxed wag = content

## Emotional Wellbeing
- **Anxiety Proneness**: High
- **Top Triggers**: Separation; Loud noises (thunderstorms/fireworks); Strangers/unfamiliar environments; Confinement; Lack of attention
- **Separation Anxiety Risk**: High
- **Calming Interventions**: Desensitization training; Interactive puzzle toys/snuffle mats; Companion toys (e.g., Snuggle Puppy); White noise/calming music; Pheromone diffusers/calming supplements
- **Cognitive Dysfunction Risk**: High

## Behavior Problems (Six-Etiology Classification)
- **Top Problems**: Excessive barking; Separation anxiety; House soiling/marking; Resource guarding/territorial aggression; Leash reactivity
- **Medical Etiology**: House soiling (UTI/bladder issues); Sudden aggression/irritability (pain/dental disease/patellar luxation); Disorientation/circling (liver shunt/hypoglycemia)
- **Fear/Anxiety Etiology**: Separation anxiety; Noise phobia (thunderstorms/loud noises); Stranger/dog reactivity (fear-based aggression)
- **Frustration Etiology**: Excessive barking (under-stimulation/boredom); Destructive behavior; Leash reactivity

## AI Communication Decoding
- **AI-Trainable Signals**: Tail position/movement; Ear orientation (up/forward vs flattened back); Body posture tension (loose/wiggly vs stiff); Vocalization pitch changes; Facial muscle tension
- **Context-Dependent Vocalizations**: High-pitched squeal/bark = excitement or separation anxiety; Alert bark at door = warning/territorial; Low growl = play vs stiff body growl = warning; Whining = wanting something vs whining with crouched body = pain/fear
- **Interspecies Communication**: Uses gaze alternation to direct attention; Modifies bark pitch based on urgency/emotion; Highly attuned to human tone of voice and emotions

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Citation: According to allpets.ai data