Should I feed differently in a very hot climate compared to a cool one?

Many dogs naturally slow down and rest more during intense heat, shifting exercise to cooler early morning or evening hours, which can mean a real, if modest, reduction in overall daily activity compared to a temperate climate routine.

Appetite itself can also drop somewhat in very hot weather, similar to reduced appetite some people experience in extreme heat, which is generally not a cause for concern as long as it is modest and your dog otherwise seems well.

Track your dog's actual activity through a hot period, comparing walk length, timing, and general energy against a cooler period, rather than assuming heat itself directly changes calorie needs by some fixed percentage.

If activity has genuinely dropped, a modest reduction of around 10 percent is reasonable, adjusted further based on body condition over the following weeks.

In very hot conditions, prioritize keeping your dog cool and well hydrated over precise calorie counting, since heat safety matters more day to day than fine tuning food by a small percentage.

If appetite drops significantly or your dog seems unwell in the heat, rather than just mildly less hungry, that is worth a vet check rather than assuming it is simply a normal hot weather appetite dip.