Introducing a puppy to a dominant dog

A 10-week-old Toy Fox Terrier coming into a home with a dominant older male — that's the scenario where the introduction really matters more than almost anything you'll buy. Most 'new puppy' lists are bloated with stuff you don't need for months, and buying the wrong things early is genuinely expensive and wasteful. The genuine essentials are much simpler. Before I point you toward anything specific, tell me: how old is your older dog, is he neutered, and do you have a rough sense of how he reacts to unfamiliar dogs or new things in his space?

Right, that's useful. An intact, territorial 5-year-old male is going to clock a new puppy's scent before he ever sees her, and that first scent impression sets the tone for the whole introduction. The single most practical thing you can do right now is manage the smell piece — not eliminate it, but give both dogs a shared neutral baseline scent so neither one is walking into a confrontation. What's your setup at home — do you have a separate room or a crate where the puppy can be safely contained for the first few days while they get used to each other's presence?

That's a solid setup — physical separation with scent exchange before visual contact is exactly right. Here's the one product I'd point you to: Adaptil Transport Spray. It's a synthetic version of the appeasing pheromone mother dogs produce, and you spray it on a blanket you've had with each dog before they meet. You can also spray it in the puppy's crate and on a towel you've rubbed on your older dog, then let the puppy sniff it before any face-to-face introduction. It doesn't sedate either dog — it just takes the sharp edge off anxiety and reactivity. For a territorial intact male, reducing his stress response in those first 48 hours is genuinely important. It's widely available on Amazon UK, around £10–12 for a 60ml bottle, and a little goes a long way. That's the one thing I'd buy before this weekend.

Reasonable scepticism. The honest answer is it's not a magic fix and it won't override a dog with a serious aggression problem. But the evidence for DAP (dog appeasing pheromone) products in reducing stress-related reactivity is reasonably solid — it's one of the better-studied options in this category. For your specific situation, you're not trying to change behaviour, you're just trying to lower the temperature on a first meeting that could easily go wrong. At £10 it's a low-stakes bet on a scenario where getting the introduction wrong could set you back months of rehab work. That's why I'd recommend it here specifically, not because it's universally essential.

For the introduction specifically, that's the main one. Beyond that, the genuine puppy essentials for a Toy Fox Terrier are minimal — a small-breed appropriate crate, food and water bowls, a collar and ID tag (legally required from 8 weeks), and a vet appointment booked. Everything else — the 47-piece puppy starter kits, the special shampoos, the elaborate toy bundles — can wait until you know what your particular puppy actually needs. Focus on the introduction this weekend, keep it short, calm, and positive, and don't force proximity. You're already thinking about this the right way.