Why must owners exercise extreme caution with Bulldog mixes in hot climates?

Answer

Dogs with shortened muzzles cannot cool themselves efficiently through panting and are susceptible to heatstroke.

Even slight facial flattening inherited from a Bulldog parent impairs the dog's ability to regulate body temperature through panting, making them highly vulnerable to heat-related illness.

Why must owners exercise extreme caution with Bulldog mixes in hot climates?
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