Border Collie vs Chihuahua
A side-by-side breakdown of size, cost, grooming load and lifestyle fit — with a straight answer on which suits which household.
Short answer
These two are closely matched. The decision comes down to cost and coat rather than temperament — pick Chihuahua if monthly budget is the deciding factor.
Comparison table
| Attribute | Border Collie | Chihuahua |
|---|---|---|
| Species | dog | dog |
| Origin | United Kingdom | Mexico |
| Weight (kg) | 14–20 | 1.5–3 |
| Height (cm) | 46–56 | 15–23 |
| Lifespan (years) | 12–15 | 14–18 |
| Monthly cost (USD) | $104 | $64 |
| Yearly cost (USD) | $1248 | $768 |
| Purchase price (USD) | $1900 | $1400 |
| Grooming need (1–5) | 4 | 2 |
| Shedding (1–5) | 4 | 3 |
| Energy (1–5) | 5 | 3 |
| Trainability (1–5) | 5 | 2 |
| Apartment fit (1–5) | 2 | 5 |
| Good with kids (1–5) | 3 | 1 |
| Vocal (1–5) | 3 | 5 |
What the numbers mean
- Border Collie weighs 14–20 kg and lives 12–15 years; Chihuahua weighs 1.5–3 kg and lives 14–18 years.
- On estimated monthly cost, Chihuahua runs about $64/month versus $104/month for Border Collie — a difference of roughly $40 a month, or $480 a year.
- Chihuahua has the higher apartment suitability score (5/5 vs 2/5) — this matters most if you rent or live in a flat.
- Border Collie has the higher shedding score (4/5 vs 3/5) — higher means more hair on your sofa.
- Border Collie has the higher grooming requirement (4/5 vs 2/5) — higher means more brushing and professional trimming.
- Border Collie has the higher energy level (5/5 vs 3/5) — higher means more daily exercise.
- Border Collie has the higher trainability score (5/5 vs 2/5).
- Border Collie has the higher kid-friendliness score (3/5 vs 1/5).
- Chihuahua has the higher vocalisation score (5/5 vs 3/5) — higher means more barking or meowing.
Cost over ten years
At the estimated monthly rates above, ten years of routine care (food, treats, grooming, medication, vet visits and supplies — excluding insurance, emergency treatment and purchase price) works out to roughly $12,480 for Border Collie and $7,680 for Chihuahua. The gap is $4,800 — usually larger than the difference in purchase price.
Health profile
Border Collie
Chihuahua
Which one should you pick?
- Choose Border Collie if you want a more substantial dog to work with, can commit to serious daily exercise, and your budget covers about $104 a month.
- Choose Chihuahua if you want a breed that copes well in a smaller home, prefer a calmer daily routine, and your budget covers about $64 a month.
- Neither, if the grooming load is more than you can sustain; both need regular coat care.