Went out to feed my bitch when i got home tonight and she just didnt look right.Usually she is at the kennel door really happy and raring to go,but tonight she just stood there looking miserable.She seems very lethargic and really stiff also when i touch the top of her legs behind the pins she crys out,any ideas what this could be,will go to vets tomorrow but any advice from anyone would be appreciated. thanks shushy.