How Dog Size Affects Every Cost Category
Dog size has a direct, predictable impact on most ownership costs. Food, medications, equipment, boarding, and grooming all scale with size. However, some costs are counter-intuitively higher for small breeds (grooming, dental care) while others favour small breeds significantly (food, boarding).
Annual Cost Comparison by Size
| Expense | Small Dog (<10kg) | Medium Dog (10–25kg) | Large Dog (25kg+) |
|---|---|---|---|
| Food | £200–£400 | £400–£700 | £700–£1,200 |
| Flea/tick prevention | £60–£100 | £100–£160 | £150–£250 |
| Routine vet care | £150–£300 | £200–£400 | £250–£500 |
| Grooming | £300–£600 | £200–£400 | £200–£500 |
| Boarding (per night) | £20–£35 | £25–£45 | £35–£65 |
| Insurance | £150–£350 | £250–£500 | £350–£700 |
| Annual Total | £1,080–£1,785 | £1,375–£2,610 | £1,885–£3,715 |
Where Small Dogs Cost More
Grooming: Many small breeds (Yorkshire Terriers, Shih Tzus, Maltese, Bichons) have high-maintenance coats requiring professional grooming every 6–8 weeks at £40–£70 per session.
Dental care: Small breeds have disproportionately high rates of dental disease. Professional cleanings every 1–2 years under anaesthetic: £300–£800.
Heating: Tiny dogs get cold. Some owners invest in dog clothing and heated beds, adding £50–£200/year.
Where Large Dogs Cost More
Everything scales with size: food, medications (dosed by weight), boarding, equipment, transport. Emergency surgery costs more for large dogs due to longer anaesthetic times and larger material volumes used.
Lifespan Factor
Large dogs typically live 8–12 years; small dogs 12–16+ years. Despite lower annual costs, small dogs often accumulate higher lifetime costs due to their significantly longer lifespans.