Both seem to have itchy crotchs
Sadly, it seems like a dermatological issue is behind your itchy dog. Tinea cruris is a name for swelling, itching, burning and itching. Similarly to inverse psoriasis, sweat and friction can contribute to jock itch. Just like latex condoms, they have been caused by a bacterial infection. Certain idiopathic types of localized pruritus have been caused by skin irritation, sexually.