Search Results: how to know if he's interested

Hello,

I (30 yo) am meeting one older women (roughly 50 yo) when I walk with dogs.
She is single. I am curious if she is flirting with me or she is just friendly.

Some info: when we first met. She “stopped me” and started to talk to me. Shaked my hand and told me her name.
Always when we meet she stop or going towards me and speak at least little bit with me.
For example she was behind me few metres (I didn't know) and whistled and called to my dog.
Or once she asked me if my dog sleep with me in bed. I said yes and she told me that if she feel cold during winter she takes her dog to bed to warm her up.

Do you think this is just normal “friendship” or can she can be interested in something sexual or romantical?

Thank you for your time guys!